Failed to compile application.

[eqrakhattak]

Flutter Version

Flutter Doctor

Description:
I'm working on Flutter web which compiles correctly but as soon as I import flutter_html, it shows the following errors:

Launching lib\main.dart on Chrome in debug mode...
Waiting for connection from debug service on Chrome...

• /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_layout_grid-1.0.6/lib/src/widgets/layout_grid.dart:212:20: Error: Inferred type argument 'AutoPlacement' doesn't conform to the bound 'Enum?' of the type variable 'T' on 'EnumProperty'.

• 'AutoPlacement' is from 'package:flutter_layout_grid/src/widgets/layout_grid.dart' ('/C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_layout_grid-1.0.6/lib/src/widgets/layout_grid.dart').

• 'Enum' is from 'dart:core'.
  Try specifying type arguments explicitly so that they conform to the bounds.
  properties.add(EnumProperty('autoPlacement', autoPlacement));
  ^
  /C:/src/flutter/flutter/packages/flutter/lib/src/foundation/diagnostics.dart:2258:20: Context: This is the type variable whose bound isn't conformed to.
  class EnumProperty<T extends Enum?> extends DiagnosticsProperty {
  ^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_layout_grid-1.0.6/lib/src/widgets/placement.dart:82:55: Error: A value of type 'RenderObject?' can't be assigned to a variable of type 'AbstractNode?'.

• 'RenderObject' is from 'package:flutter/src/rendering/object.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/rendering/object.dart').

• 'AbstractNode' is from 'package:flutter/src/foundation/node.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/foundation/node.dart').
  final AbstractNode? targetParent = renderObject.parent;
  ^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_layout_grid-1.0.6/lib/src/widgets/placement.dart:83:58: Error: The method 'markNeedsPlacement' isn't defined for the class 'AbstractNode?'.

• 'AbstractNode' is from 'package:flutter/src/foundation/node.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/foundation/node.dart').
  Try correcting the name to the name of an existing method, or defining a method named 'markNeedsPlacement'.
  if (targetParent is RenderLayoutGrid) targetParent.markNeedsPlacement();
  ^^^^^^^^^^^^^^^^^^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_layout_grid-1.0.6/lib/src/widgets/placement.dart:84:54: Error: The method 'markNeedsLayout' isn't defined for the class 'AbstractNode?'.

• 'AbstractNode' is from 'package:flutter/src/foundation/node.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/foundation/node.dart').
  Try correcting the name to the name of an existing method, or defining a method named 'markNeedsLayout'.
  if (targetParent is RenderObject) targetParent.markNeedsLayout();
  ^^^^^^^^^^^^^^^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_layout_grid-1.0.6/lib/src/widgets/placement.dart:132:55: Error: A value of type 'RenderObject?' can't be assigned to a variable of type 'AbstractNode?'.

• 'RenderObject' is from 'package:flutter/src/rendering/object.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/rendering/object.dart').

• 'AbstractNode' is from 'package:flutter/src/foundation/node.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/foundation/node.dart').
  final AbstractNode? targetParent = renderObject.parent;
  ^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_layout_grid-1.0.6/lib/src/widgets/placement.dart:133:58: Error: The method 'markNeedsPlacement' isn't defined for the class 'AbstractNode?'.

• 'AbstractNode' is from 'package:flutter/src/foundation/node.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/foundation/node.dart').
  Try correcting the name to the name of an existing method, or defining a method named 'markNeedsPlacement'.
  if (targetParent is RenderLayoutGrid) targetParent.markNeedsPlacement();
  ^^^^^^^^^^^^^^^^^^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_layout_grid-1.0.6/lib/src/widgets/placement.dart:134:54: Error: The method 'markNeedsLayout' isn't defined for the class 'AbstractNode?'.

• 'AbstractNode' is from 'package:flutter/src/foundation/node.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/foundation/node.dart').
  Try correcting the name to the name of an existing method, or defining a method named 'markNeedsLayout'.
  if (targetParent is RenderObject) targetParent.markNeedsLayout();
  ^^^^^^^^^^^^^^^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_math_fork-0.5.0/lib/src/widgets/selection/gesture_detector_builder.dart:186:20: Error: The argument type 'void Function(TapDownDetails)' can't be assigned to the parameter type 'void Function(TapDragDownDetails)?'.

• 'TapDownDetails' is from 'package:flutter/src/gestures/tap.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/tap.dart').

• 'TapDragDownDetails' is from 'package:flutter/src/gestures/tap_and_drag.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/tap_and_drag.dart').
  onTapDown: onTapDown,
  ^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_math_fork-0.5.0/lib/src/widgets/selection/gesture_detector_builder.dart:190:24: Error: The argument type 'void Function(TapUpDetails)' can't be assigned to the parameter type 'void Function(TapDragUpDetails)?'.

• 'TapUpDetails' is from 'package:flutter/src/gestures/tap.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/tap.dart').

• 'TapDragUpDetails' is from 'package:flutter/src/gestures/tap_and_drag.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/tap_and_drag.dart').
  onSingleTapUp: onSingleTapUp,
  ^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_math_fork-0.5.0/lib/src/widgets/selection/gesture_detector_builder.dart:195:26: Error: The argument type 'void Function(TapDownDetails)' can't be assigned to the parameter type 'void Function(TapDragDownDetails)?'.

• 'TapDownDetails' is from 'package:flutter/src/gestures/tap.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/tap.dart').

• 'TapDragDownDetails' is from 'package:flutter/src/gestures/tap_and_drag.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/tap_and_drag.dart').
  onDoubleTapDown: onDoubleTapDown,
  ^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_math_fork-0.5.0/lib/src/widgets/selection/gesture_detector_builder.dart:196:31: Error: The argument type 'void Function(DragStartDetails)' can't be assigned to the parameter type 'void Function(TapDragStartDetails)?'.

• 'DragStartDetails' is from 'package:flutter/src/gestures/drag_details.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/drag_details.dart').

• 'TapDragStartDetails' is from 'package:flutter/src/gestures/tap_and_drag.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/tap_and_drag.dart').
  onDragSelectionStart: onDragSelectionStart,
  ^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_math_fork-0.5.0/lib/src/widgets/selection/gesture_detector_builder.dart:197:32: Error: The argument type 'void Function(DragStartDetails, DragUpdateDetails)' can't be assigned to the parameter type 'void Function(TapDragUpdateDetails)?'.

• 'DragStartDetails' is from 'package:flutter/src/gestures/drag_details.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/drag_details.dart').

• 'DragUpdateDetails' is from 'package:flutter/src/gestures/drag_details.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/drag_details.dart').

• 'TapDragUpdateDetails' is from 'package:flutter/src/gestures/tap_and_drag.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/tap_and_drag.dart').
  onDragSelectionUpdate: onDragSelectionUpdate,
  ^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_math_fork-0.5.0/lib/src/widgets/selection/gesture_detector_builder.dart:198:29: Error: The argument type 'void Function(DragEndDetails)' can't be assigned to the parameter type 'void Function(TapDragEndDetails)?'.

• 'DragEndDetails' is from 'package:flutter/src/gestures/drag_details.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/drag_details.dart').

• 'TapDragEndDetails' is from 'package:flutter/src/gestures/tap_and_drag.dart' ('/C:/src/flutter/flutter/packages/flutter/lib/src/gestures/tap_and_drag.dart').
  onDragSelectionEnd: onDragSelectionEnd,
  ^
  /C:/Users/eqrak/AppData/Local/Pub/Cache/hosted/pub.dev/flutter_math_fork-0.5.0/lib/src/widgets/selection/handle_overlay.dart:60:40: Error: Member not found: 'fadeDuration'.
  duration: TextSelectionOverlay.fadeDuration, vsync: this);
  ^^^^^^^^^^^^
  Failed to compile application.

I have added flutter_html: ^2.2.1 in my pubspec.yaml file.
Imported import 'package:flutter_html/flutter_html.dart';
Used HTML widget as:

Html(
     data: """<iframe style="border-radius:12px" src="https://open.spotify.com/embed/playlist/0Lg3GfMqCQGbCGAv0oQnpW?utm_source=generator" width="100%" height="352" frameBorder="0" allowfullscreen="" allow="autoplay; clipboard-write; encrypted-media; fullscreen; picture-in-picture" loading="lazy"></iframe> """,
),

[arifikhsan]

upgrade the version to flutter_html: ^3.0.0-alpha.3 fixed the error for me