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[flutter] 업데이트 이후 이전 파일 firebase 연결후 오류

').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: _boxKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/material/material.dart:387:14: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
            key: _inkFeatureRenderer,
                 ^
    ../../developer/flutter/packages/flutter/lib/src/material/mergeable_material.dart:426:22: Error: The argument type 'UniqueKey' can't be assigned to the parameter type 'LocalKey'.
     - 'UniqueKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'LocalKey' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                    key: UniqueKey(),
                         ^
    ../../developer/flutter/packages/flutter/lib/src/material/mergeable_material.dart:582:18: Error: The argument type '_MergeableMaterialSliceKey' can't be assigned to the parameter type 'Key?'.
     - '_MergeableMaterialSliceKey' is from 'package:flutter/src/material/mergeable_material.dart' ('../../developer/flutter/packages/flutter/lib/src/material/mergeable_material.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                key: _MergeableMaterialSliceKey(_children[i].key),
                     ^
    ../../developer/flutter/packages/flutter/lib/src/material/navigation_bar.dart:620:31: Error: A value of type 'UniqueKey' can't be assigned to a variable of type 'Key'.
     - 'UniqueKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
      static final Key _iconKey = UniqueKey();
                                  ^
    ../../developer/flutter/packages/flutter/lib/src/material/navigation_bar.dart:621:32: Error: A value of type 'UniqueKey' can't be assigned to a variable of type 'Key'.
     - 'UniqueKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
      static final Key _labelKey = UniqueKey();
                                   ^
    ../../developer/flutter/packages/flutter/lib/src/material/paginated_data_table.dart:509:26: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                        key: _tableKey,
                             ^
    ../../developer/flutter/packages/flutter/lib/src/material/reorderable_list.dart:314:31: Error: A value of type '_ReorderableListViewChildGlobalKey' can't be assigned to a variable of type 'Key'.
     - '_ReorderableListViewChildGlobalKey' is from 'package:flutter/src/material/reorderable_list.dart' ('../../developer/flutter/packages/flutter/lib/src/material/reorderable_list.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
        final Key itemGlobalKey = _ReorderableListViewChildGlobalKey(item.key!, this);
                                  ^
    ../../developer/flutter/packages/flutter/lib/src/material/scaffold.dart:278:65: Error: The argument type 'UniqueKey' can't be assigned to the parameter type 'Key?'.
     - 'UniqueKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          snackBar.withAnimation(_snackBarController!, fallbackKey: UniqueKey()),
                                                                    ^
    ../../developer/flutter/packages/flutter/lib/src/material/scaffold.dart:404:77: Error: The argument type 'UniqueKey' can't be assigned to the parameter type 'Key?'.
     - 'UniqueKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          materialBanner.withAnimation(_materialBannerController!, fallbackKey: UniqueKey()),
                                                                                ^
    ../../developer/flutter/packages/flutter/lib/src/material/scaffold.dart:2070:65: Error: The argument type 'UniqueKey' can't be assigned to the parameter type 'Key?'.
     - 'UniqueKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          snackbar.withAnimation(_snackBarController!, fallbackKey: UniqueKey()),
                                                                    ^
    ../../developer/flutter/packages/flutter/lib/src/material/scaffold.dart:2282:22: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                    key: _currentBottomSheetKey,
                         ^
    ../../developer/flutter/packages/flutter/lib/src/material/scaffold.dart:2368:12: Error: The argument type 'GlobalKey<_StandardBottomSheetState>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - '_StandardBottomSheetState' is from 'package:flutter/src/material/scaffold.dart' ('../../developer/flutter/packages/flutter/lib/src/material/scaffold.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: bottomSheetKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/material/selectable_text.dart:667:14: Error: The argument type 'GlobalKey<EditableTextState>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'EditableTextState' is from 'package:flutter/src/widgets/editable_text.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/editable_text.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
            key: editableTextKey,
                 ^
    ../../developer/flutter/packages/flutter/lib/src/material/slider.dart:716:18: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                key: _renderObjectKey,
                     ^
    ../../developer/flutter/packages/flutter/lib/src/material/stepper.dart:674:23: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                key: _keys[i],
                          ^
    ../../developer/flutter/packages/flutter/lib/src/material/tabs.dart:1144:26: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                key: _tabKeys[index],
                             ^
    ../../developer/flutter/packages/flutter/lib/src/material/text_field.dart:1222:16: Error: The argument type 'GlobalKey<EditableTextState>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'EditableTextState' is from 'package:flutter/src/widgets/editable_text.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/editable_text.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              key: editableTextKey,
                   ^
    ../../developer/flutter/packages/flutter/lib/src/material/text_selection_toolbar.dart:188:12: Error: The argument type 'UniqueKey' can't be assigned to the parameter type 'Key?'.
     - 'UniqueKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: _containerKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/material/time_picker.dart:2285:16: Error: The argument type 'GlobalKey<FormState>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'FormState' is from 'package:flutter/src/widgets/form.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/form.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              key: _formKey,
                   ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/actions.dart:1276:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: _mouseRegionKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/animated_list.dart:307:18: Error: The argument type 'GlobalKey<SliverAnimatedListState>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'SliverAnimatedListState' is from 'package:flutter/src/widgets/animated_list.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/animated_list.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                key: _sliverAnimatedListKey,
                     ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/app.dart:1550:14: Error: The argument type 'GlobalKey<NavigatorState>?' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'NavigatorState' is from 'package:flutter/src/widgets/navigator.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/navigator.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
            key: _navigator,
                 ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/autocomplete.dart:477:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: _fieldKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/binding.dart:1046:64: Error: The method 'toStringDeep' isn't defined for the class 'Element'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'toStringDeep'.
        buffer.writeln(WidgetsBinding.instance!.renderViewElement!.toStringDeep());
                                                                   ^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/editable_text.dart:2852:22: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                    key: _editableKey,
                         ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:56:29: Error: The method 'shortHash' isn't defined for the class 'UniqueKey'.
     - 'UniqueKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'shortHash'.
      String toString() => '[#${shortHash(this)}]';
                                ^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:90:18: Error: The method 'describeIdentity' isn't defined for the class 'ObjectKey'.
     - 'ObjectKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'describeIdentity'.
          return '[${describeIdentity(value)}]';
                     ^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:91:16: Error: The method 'objectRuntimeType' isn't defined for the class 'ObjectKey'.
     - 'ObjectKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'objectRuntimeType'.
        return '[${objectRuntimeType(this, 'ObjectKey')} ${describeIdentity(value)}]';
                   ^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:91:56: Error: The method 'describeIdentity' isn't defined for the class 'ObjectKey'.
     - 'ObjectKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'describeIdentity'.
        return '[${objectRuntimeType(this, 'ObjectKey')} ${describeIdentity(value)}]';
                                                           ^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:201:28: Error: The method 'shortHash' isn't defined for the class 'LabeledGlobalKey<T>'.
     - 'LabeledGlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'shortHash'.
          return '[GlobalKey#${shortHash(this)}$label]';
                               ^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:202:16: Error: The method 'describeIdentity' isn't defined for the class 'LabeledGlobalKey<T>'.
     - 'LabeledGlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'describeIdentity'.
        return '[${describeIdentity(this)}$label]';
                   ^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:249:23: Error: The method 'objectRuntimeType' isn't defined for the class 'GlobalObjectKey<T>'.
     - 'GlobalObjectKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'objectRuntimeType'.
        String selfType = objectRuntimeType(this, 'GlobalObjectKey');
                          ^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:257:26: Error: The method 'describeIdentity' isn't defined for the class 'GlobalObjectKey<T>'.
     - 'GlobalObjectKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'describeIdentity'.
        return '[$selfType ${describeIdentity(value)}]';
                             ^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:322:9: Error: 'Key' isn't a type.
      final Key? key;
            ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:338:25: Error: The method 'objectRuntimeType' isn't defined for the class 'Widget'.
     - 'Widget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'objectRuntimeType'.
        final String type = objectRuntimeType(this, 'Widget');
                            ^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:344:11: Error: Superclass has no method named 'debugFillProperties'.
        super.debugFillProperties(properties);
              ^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:345:46: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'Widget'.
     - 'Widget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
        properties.defaultDiagnosticsTreeStyle = DiagnosticsTreeStyle.dense;
                                                 ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:494:27: Error: 'Key' isn't a type.
      const StatelessWidget({ Key? key }) : super(key: key);
                              ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:731:26: Error: 'Key' isn't a type.
      const StatefulWidget({ Key? key }) : super(key: key);
                             ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:1330:11: Error: Superclass has no method named 'debugFillProperties'.
        super.debugFillProperties(properties);
              ^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:1335:20: Error: The method 'ObjectFlagProperty' isn't defined for the class 'State<T>'.
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'ObjectFlagProperty'.
        properties.add(ObjectFlagProperty<T>('_widget', _widget, ifNull: 'no widget'));
                       ^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:1336:20: Error: The method 'ObjectFlagProperty' isn't defined for the class 'State<T>'.
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'ObjectFlagProperty'.
        properties.add(ObjectFlagProperty<StatefulElement>('_element', _element, ifNull: 'not mounted'));
                       ^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:1360:23: Error: 'Key' isn't a type.
      const ProxyWidget({ Key? key, required this.child }) : super(key: key);
                          ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:1426:28: Error: 'Key' isn't a type.
      const ParentDataWidget({ Key? key, required Widget child })
                               ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:1655:27: Error: 'Key' isn't a type.
      const InheritedWidget({ Key? key, required Widget child })
                              ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:1683:30: Error: 'Key' isn't a type.
      const RenderObjectWidget({ Key? key }) : super(key: key);
                                 ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:1727:34: Error: 'Key' isn't a type.
      const LeafRenderObjectWidget({ Key? key }) : super(key: key);
                                     ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:1744:41: Error: 'Key' isn't a type.
      const SingleChildRenderObjectWidget({ Key? key, this.child }) : super(key: key);
                                            ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:1776:34: Error: 'Key' isn't a type.
      MultiChildRenderObjectWidget({ Key? key, this.children = const <Widget>[] })
                                     ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:2299:49: Error: 'DiagnosticsTreeStyle' isn't a type.
      DiagnosticsNode describeElement(String name, {DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty});
                                                    ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:2302:48: Error: 'DiagnosticsTreeStyle' isn't a type.
      DiagnosticsNode describeWidget(String name, {DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty});
                                                   ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:2396:9: Error: The method 'debugPrintStack' isn't defined for the class 'BuildOwner'.
     - 'BuildOwner' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'debugPrintStack'.
            debugPrintStack(label: 'scheduleBuildFor() called for $element${_dirtyElements.contains(element) ? " (ALREADY IN LIST)" : ""}');
            ^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:2417:11: Error: The method 'debugPrintStack' isn't defined for the class 'BuildOwner'.
     - 'BuildOwner' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'debugPrintStack'.
              debugPrintStack(label: 'BuildOwner.scheduleBuildFor() called; _dirtyElementsNeedsResorting was $_dirtyElementsNeedsResorting (now true); dirty list is: $_dirtyElements');
              ^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:2517:44: Error: The getter 'timelineArgumentsIndicatingLandmarkEvent' isn't defined for the class 'BuildOwner'.
     - 'BuildOwner' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'timelineArgumentsIndicatingLandmarkEvent'.
        Timeline.startSync('Build', arguments: timelineArgumentsIndicatingLandmarkEvent);
                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:2566:24: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'BuildOwner'.
     - 'BuildOwner' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
                    style: DiagnosticsTreeStyle.errorProperty,
                           ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:2571:24: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'BuildOwner'.
     - 'BuildOwner' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
                    style: DiagnosticsTreeStyle.errorProperty,
                           ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:2834:52: Error: The getter 'timelineArgumentsIndicatingLandmarkEvent' isn't defined for the class 'BuildOwner'.
     - 'BuildOwner' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'timelineArgumentsIndicatingLandmarkEvent'.
        Timeline.startSync('Finalize tree', arguments: timelineArgumentsIndicatingLandmarkEvent);
                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:2939:33: Error: 'DebugReassembleConfig' isn't a type.
      void reassemble(Element root, DebugReassembleConfig? reassembleConfig) {
                                    ^^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3011:3: Error: 'DebugReassembleConfig' isn't a type.
      DebugReassembleConfig? _debugReassembleConfig;
      ^^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3192:14: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'Element'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
          style: DiagnosticsTreeStyle.errorProperty,
                 ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3208:12: Error: Method not found: 'DiagnosticsBlock'.
        return DiagnosticsBlock(
               ^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3216:49: Error: 'DiagnosticsTreeStyle' isn't a type.
      DiagnosticsNode describeElement(String name, {DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty}) {
                                                    ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3221:48: Error: 'DiagnosticsTreeStyle' isn't a type.
      DiagnosticsNode describeWidget(String name, {DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty}) {
                                                   ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3389:13: Error: 'Key' isn't a type.
          final Key? key = newWidget.key;
                ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3435:11: Error: 'Key' isn't a type.
        final Key? key = widget.key;
              ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3573:122: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'Element'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
                DiagnosticsProperty<Widget>('The second child that was to be instantiated with that key was', widget, style: DiagnosticsTreeStyle.errorProperty),
                                                                                              ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3611:11: Error: 'Key' isn't a type.
        final Key? key = newWidget.key;
              ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3828:11: Error: 'Key' isn't a type.
        final Key? key = _widget!.key;
              ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3886:11: Error: The method 'ErrorSpacer' isn't defined for the class 'Element'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'ErrorSpacer'.
              ErrorSpacer(),
              ^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:3894:11: Error: The method 'ErrorSpacer' isn't defined for the class 'Element'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'ErrorSpacer'.
              ErrorSpacer(),
              ^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4165:60: Error: The method 'describeIdentity' isn't defined for the class 'Element'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'describeIdentity'.
      String toStringShort() => _widget?.toStringShort() ?? '${describeIdentity(this)}(DEFUNCT)';
                                                               ^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4168:53: Error: 'DiagnosticsTreeStyle' isn't a type.
      DiagnosticsNode toDiagnosticsNode({ String? name, DiagnosticsTreeStyle? style }) {
                                                        ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4169:12: Error: A value of type '_ElementDiagnosticableTreeNode' can't be returned from a function with return type 'DiagnosticsNode'.
     - '_ElementDiagnosticableTreeNode' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
        return _ElementDiagnosticableTreeNode(
               ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4178:11: Error: Superclass has no method named 'debugFillProperties'.
        super.debugFillProperties(properties);
              ^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4184:40: Error: 'Key' isn't a type.
        properties.add(DiagnosticsProperty<Key>('key', _widget?.key, showName: false, defaultValue: null, level: DiagnosticLevel.hidden));
                                           ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4179:45: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'Element'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
        properties.defaultDiagnosticsTreeStyle= DiagnosticsTreeStyle.dense;
                                                ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4181:22: Error: The method 'ObjectFlagProperty' isn't defined for the class 'Element'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'ObjectFlagProperty'.
          properties.add(ObjectFlagProperty<int>('depth', depth, ifNull: 'no depth'));
                         ^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4183:20: Error: The method 'ObjectFlagProperty' isn't defined for the class 'Element'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'ObjectFlagProperty'.
        properties.add(ObjectFlagProperty<Widget>('widget', _widget, ifNull: 'no widget'));
                       ^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4189:59: Error: The method 'toDiagnosticsNode' isn't defined for the class 'InheritedWidget'.
     - 'InheritedWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'toDiagnosticsNode'.
            .map((InheritedElement element) => element.widget.toDiagnosticsNode(style: DiagnosticsTreeStyle.sparse))
                                                              ^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4189:84: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'Element'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
            .map((InheritedElement element) => element.widget.toDiagnosticsNode(style: DiagnosticsTreeStyle.sparse))
                                                                                       ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4190:10: Error: A value of type 'List<dynamic>' can't be assigned to a variable of type 'List<DiagnosticsNode>'.
     - 'List' is from 'dart:core'.
     - 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
            .toList();
             ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4329:14: Error: 'DiagnosticsTreeStyle' isn't a type.
        required DiagnosticsTreeStyle? style,
                 ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4332:5: Error: No named parameter with the name 'name'.
        name: name,
        ^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4340:34: Error: 'DiagnosticsSerializationDelegate' isn't a type.
      Map<String, Object?> toJsonMap(DiagnosticsSerializationDelegate delegate) {
                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4341:45: Error: Superclass has no method named 'toJsonMap'.
        final Map<String, Object?> json = super.toJsonMap(delegate);
                                                ^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4342:29: Error: The getter 'value' isn't defined for the class '_ElementDiagnosticableTreeNode'.
     - '_ElementDiagnosticableTreeNode' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'value'.
        final Element element = value as Element;
                                ^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4443:44: Error: 'FlutterErrorDetails' isn't a type.
      static Widget _defaultErrorWidgetBuilder(FlutterErrorDetails details) {
                                               ^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4477:62: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'ErrorWidget'.
     - 'ErrorWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
          properties.add(_flutterError!.toDiagnosticsNode(style: DiagnosticsTreeStyle.whitespace));
                                                                 ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4578:10: Error: The getter 'kReleaseMode' isn't defined for the class 'ComponentElement'.
     - 'ComponentElement' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'kReleaseMode'.
        if (!kReleaseMode && debugProfileBuildsEnabled)
             ^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4579:63: Error: The getter 'timelineArgumentsIndicatingLandmarkEvent' isn't defined for the class 'ComponentElement'.
     - 'ComponentElement' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'timelineArgumentsIndicatingLandmarkEvent'.
          Timeline.startSync('${widget.runtimeType}',  arguments: timelineArgumentsIndicatingLandmarkEvent);
                                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4629:10: Error: The getter 'kReleaseMode' isn't defined for the class 'ComponentElement'.
     - 'ComponentElement' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'kReleaseMode'.
        if (!kReleaseMode && debugProfileBuildsEnabled)
             ^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4907:53: Error: 'DiagnosticsTreeStyle' isn't a type.
      DiagnosticsNode toDiagnosticsNode({ String? name, DiagnosticsTreeStyle? style }) {
                                                        ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:4908:12: Error: A value of type '_ElementDiagnosticableTreeNode' can't be returned from a function with return type 'DiagnosticsNode'.
     - '_ElementDiagnosticableTreeNode' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
        return _ElementDiagnosticableTreeNode(
               ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:5647:9: Error: 'Key' isn't a type.
        Map<Key, Element>? oldKeyedChildren;
            ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:5649:27: Error: 'Key' isn't a type.
          oldKeyedChildren = <Key, Element>{};
                              ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:5668:15: Error: 'Key' isn't a type.
            final Key? key = newWidget.key;
                  ^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:5844:18: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'RenderObjectElement'.
     - 'RenderObjectElement' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
              style: DiagnosticsTreeStyle.shallow,
                     ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:5921:18: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'RenderObjectElement'.
     - 'RenderObjectElement' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
              style: DiagnosticsTreeStyle.shallow,
                     ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:5992:18: Error: The getter 'DiagnosticsTreeStyle' isn't defined for the class 'RenderObjectElement'.
     - 'RenderObjectElement' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'DiagnosticsTreeStyle'.
              style: DiagnosticsTreeStyle.shallow,
                     ^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:6087:19: Error: The method 'debugDescribeChildren' isn't defined for the class 'RenderObjectWidget'.
     - 'RenderObjectWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'debugDescribeChildren'.
        return widget.debugDescribeChildren();
                      ^^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:6241:11: Error: The method 'FlutterErrorDetails' isn't defined for the class 'MultiChildRenderObjectElement'.
     - 'MultiChildRenderObjectElement' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
    Try correcting the name to the name of an existing method, or defining a method named 'FlutterErrorDetails'.
              FlutterErrorDetails(
              ^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:6310:9: Error: 'FlutterErrorDetails' isn't a type.
      final FlutterErrorDetails details = FlutterErrorDetails(
            ^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:6310:39: Error: Method not found: 'FlutterErrorDetails'.
      final FlutterErrorDetails details = FlutterErrorDetails(
                                          ^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart:6378:29: Error: 'DebugReassembleConfig' isn't a type.
    bool _debugShouldReassemble(DebugReassembleConfig? config, Widget? widget) {
                                ^^^^^^^^^^^^^^^^^^^^^
    ../../developer/flutter/packages/flutter/lib/src/widgets/heroes.dart:414:36: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              child: KeyedSubtree(key: _key, child: widget.child),
                                       ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/interactive_viewer.dart:1041:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: _parentKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/interactive_viewer.dart:1077:14: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
            key: childKey,
                 ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/localizations.dart:578:14: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
            key: _localizedResourcesScopeKey,
                 ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/navigator.dart:5100:22: Error: The argument type 'GlobalKey<OverlayState>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'OverlayState' is from 'package:flutter/src/widgets/overlay.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/overlay.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                    key: _overlayKey,
                         ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/overlay.dart:501:22: Error: The argument type 'GlobalKey<_OverlayEntryWidgetState>' can't be assigned to the parameter type 'Key'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - '_OverlayEntryWidgetState' is from 'package:flutter/src/widgets/overlay.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/overlay.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              key: entry._key,
                         ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/overlay.dart:508:22: Error: The argument type 'GlobalKey<_OverlayEntryWidgetState>' can't be assigned to the parameter type 'Key'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - '_OverlayEntryWidgetState' is from 'package:flutter/src/widgets/overlay.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/overlay.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              key: entry._key,
                         ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/reorderable_list.dart:358:18: Error: The argument type 'GlobalKey<SliverReorderableListState>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'SliverReorderableListState' is from 'package:flutter/src/widgets/reorderable_list.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/reorderable_list.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                key: _sliverReorderableListKey,
                     ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/reorderable_list.dart:875:12: Error: The argument type '_ReorderableItemGlobalKey' can't be assigned to the parameter type 'Key'.
     - '_ReorderableItemGlobalKey' is from 'package:flutter/src/widgets/reorderable_list.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/reorderable_list.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: _ReorderableItemGlobalKey(child.key!, index, this),
               ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/routes.dart:866:49: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                                  key: widget.route._subtreeKey, // immutable
                                                    ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/routes.dart:1624:14: Error: The argument type 'GlobalKey<_ModalScopeState<T>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - '_ModalScopeState' is from 'package:flutter/src/widgets/routes.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/routes.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
            key: _scopeKey,
                 ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/scrollable.dart:757:20: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                  key: _ignorePointerKey,
                       ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/scrollable.dart:750:16: Error: The argument type 'GlobalKey<RawGestureDetectorState>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'RawGestureDetectorState' is from 'package:flutter/src/widgets/gesture_detector.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/gesture_detector.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              key: _gestureDetectorKey,
                   ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/scrollable.dart:771:16: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              key: _scrollSemanticsKey,
                   ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/scrollbar.dart:1760:22: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                    key: _scrollbarPainterKey,
                         ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/widget_inspector.dart:1496:7: Error: The argument type 'List<Element>' can't be assigned to the parameter type 'List<Diagnosticable>'.
     - 'List' is from 'dart:core'.
     - 'Element' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Diagnosticable' is from 'package:flutter/src/foundation/diagnostics.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
          _getRawElementParentChain(element, numLocalParents: numLocalParents),
          ^
    ../../developer/flutter/packages/flutter/lib/src/widgets/widget_inspector.dart:2406:16: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              key: _ignorePointerKey,
                   ^
    ../../developer/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.3.8/lib/get_navigation/src/nav2/get_router_delegate.dart:467:16: Error: The argument type 'GlobalKey<NavigatorState>?' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'NavigatorState' is from 'package:flutter/src/widgets/navigator.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/navigator.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              key: key,
                   ^
    ../../developer/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.3.8/lib/get_navigation/src/root/root_controller.dart:62:14: Error: A value of type 'UniqueKey' can't be assigned to a variable of type 'Key?'.
     - 'UniqueKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
        unikey = UniqueKey();
                 ^
    ../../developer/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.3.8/lib/get_navigation/src/snackbar/snack.dart:390:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: backgroundBoxKey,
               ^
    ../../developer/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.3.8/lib/get_navigation/src/snackbar/snack.dart:420:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: backgroundBoxKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/app.dart:514:14: Error: The argument type 'GlobalObjectKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalObjectKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
            key: GlobalObjectKey(this),
                 ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/app.dart:542:12: Error: The argument type 'GlobalObjectKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalObjectKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: GlobalObjectKey(this),
               ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/context_menu.dart:371:16: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              key: _childGlobalKey,
                   ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/context_menu.dart:479:14: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
            key: _childGlobalKey,
                 ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/context_menu.dart:767:28: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                          key: _sheetGlobalKey,
                               ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/context_menu.dart:776:22: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                    key: _childGlobalKey,
                         ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/context_menu.dart:1006:23: Error: The argument type 'GlobalKey<State<StatefulWidget>>?' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
              key: widget.sheetGlobalKey,
                          ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/context_menu.dart:1046:19: Error: The argument type 'GlobalKey<State<StatefulWidget>>?' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: widget.childGlobalKey,
                      ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/context_menu_action.dart:103:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: _globalKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/nav_bar.dart:1113:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: leadingKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/nav_bar.dart:1145:30: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
        return KeyedSubtree(key: backChevronKey, child: const _BackChevron());
                                 ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/nav_bar.dart:1169:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: backLabelKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/nav_bar.dart:1204:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: middleKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/nav_bar.dart:1220:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: trailingKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/nav_bar.dart:1260:12: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: largeTitleKey,
               ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/tab_view.dart:169:19: Error: The argument type 'GlobalKey<NavigatorState>?' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'NavigatorState' is from 'package:flutter/src/widgets/navigator.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/navigator.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
          key: widget.navigatorKey,
                      ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/text_field.dart:1087:20: Error: The argument type 'GlobalKey<State<StatefulWidget>>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'State' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'StatefulWidget' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                  key: _clearGlobalKey,
                       ^
    ../../developer/flutter/packages/flutter/lib/src/cupertino/text_field.dart:1224:18: Error: The argument type 'GlobalKey<EditableTextState>' can't be assigned to the parameter type 'Key?'.
     - 'GlobalKey' is from 'package:flutter/src/widgets/framework.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/framework.dart').
     - 'EditableTextState' is from 'package:flutter/src/widgets/editable_text.dart' ('../../developer/flutter/packages/flutter/lib/src/widgets/editable_text.dart').
     - 'Key' is from 'package:flutter/src/foundation/key.dart' ('../../developer/flutter/packages/flutter/lib/src/foundation/key.dart').
                key: editableTextKey,
                     ^
    Failed to package /Users/WoonseonRyu/Desktop/Agora-Flutter-Quickstart-master.
    Command PhaseScriptExecution failed with a nonzero exit code
    note: Using new build system
    note: Planning
    note: Build preparation complete
    note: Building targets in dependency order

 

터미널이 오류의 시작점을 확인할 수 없을 정도로 오류가 가득 찼다. 

 

podfile.lock도 지워보고

flutter clean도 해보았지만 도저히 해결될 수가 없었다. 

 

그래서 구글링중 다음과 같은 부분을 보았고 시도

 

flutter clean
rm -Rf ios/Pods
rm -Rf ios/.symlinks
rm -Rf ios/Flutter/Flutter.framework
rm -Rf ios/Flutter/Flutter.podspec

rm ios/Podfile

이거 이후 flutter clean후, 다시 실행