Edit: Solved! Both flutter_math_fork and flutter_layout_grid were packages I didn't installed by myself, so I wasn't finding them in the pubspeck.yaml. However, it seems those were dependencies for flutter_html - that was the one causing the error. I had to take it out and find another package for managing html text, and now everything's fine
After updating quite some versions, to be up to date, I'm no longer being able to run my app - I get a Target kernel_snapshot failed: Exception every time. I already checked all the dependencies in pubspec.yaml and I can't find anything outdated there. In fact, the two packages throwing the errors are from flutter itself.
This is the error:
../../../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' ('../../flutter/packages/flutter/lib/src/gestures/tap.dart').
- 'TapDragDownDetails' is from 'package:flutter/src/widgets/tap_and_drag_gestures.dart' ('../../flutter/packages/flutter/lib/src/widgets/tap_and_drag_gestures.dart').
onTapDown: onTapDown,
^
../../../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' ('../../flutter/packages/flutter/lib/src/gestures/tap.dart').
- 'TapDragUpDetails' is from 'package:flutter/src/widgets/tap_and_drag_gestures.dart' ('../../flutter/packages/flutter/lib/src/widgets/tap_and_drag_gestures.dart').
onSingleTapUp: onSingleTapUp,
^
../../../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' ('../../flutter/packages/flutter/lib/src/gestures/tap.dart').
- 'TapDragDownDetails' is from 'package:flutter/src/widgets/tap_and_drag_gestures.dart' ('../../flutter/packages/flutter/lib/src/widgets/tap_and_drag_gestures.dart').
onDoubleTapDown: onDoubleTapDown,
^
../../../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' ('../../flutter/packages/flutter/lib/src/gestures/drag_details.dart').
- 'TapDragStartDetails' is from 'package:flutter/src/widgets/tap_and_drag_gestures.dart' ('../../flutter/packages/flutter/lib/src/widgets/tap_and_drag_gestures.dart').
onDragSelectionStart: onDragSelectionStart,
^
../../../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' ('../../flutter/packages/flutter/lib/src/gestures/drag_details.dart').
- 'DragUpdateDetails' is from 'package:flutter/src/gestures/drag_details.dart' ('../../flutter/packages/flutter/lib/src/gestures/drag_details.dart').
- 'TapDragUpdateDetails' is from 'package:flutter/src/widgets/tap_and_drag_gestures.dart' ('../../flutter/packages/flutter/lib/src/widgets/tap_and_drag_gestures.dart').
onDragSelectionUpdate: onDragSelectionUpdate,
^
../../../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' ('../../flutter/packages/flutter/lib/src/gestures/drag_details.dart').
- 'TapDragEndDetails' is from 'package:flutter/src/widgets/tap_and_drag_gestures.dart' ('../../flutter/packages/flutter/lib/src/widgets/tap_and_drag_gestures.dart').
onDragSelectionEnd: onDragSelectionEnd,
^
../../../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' ('../../flutter/packages/flutter/lib/src/rendering/object.dart').
- 'AbstractNode' is from 'package:flutter/src/foundation/node.dart' ('../../flutter/packages/flutter/lib/src/foundation/node.dart').
final AbstractNode? targetParent = renderObject.parent;
^
../../../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' ('../../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();
^^^^^^^^^^^^^^^^^^
../../../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' ('../../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();
^^^^^^^^^^^^^^^
../../../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' ('../../flutter/packages/flutter/lib/src/rendering/object.dart').
- 'AbstractNode' is from 'package:flutter/src/foundation/node.dart' ('../../flutter/packages/flutter/lib/src/foundation/node.dart').
final AbstractNode? targetParent = renderObject.parent;
^
../../../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' ('../../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();
^^^^^^^^^^^^^^^^^^
../../../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' ('../../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();
^^^^^^^^^^^^^^^
Target kernel_snapshot failed: Exception
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\Users\jjj\Documents\flutter\bin\flutter.bat'' finished with non-zero exit value 1
* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 8s
Exception: Gradle task assembleDebug failed with exit code 1
I already started a whole new project and copy/paste the lib. I also both repaired and deleted the pub cache. However, if I try to run a new vanilla project, the new Flutter counter app, I can build it without problem.
