I am getting this build error Please help

AM: :muscle: Building with sound null safety :muscle:

2:04:57 AM: Compiling lib/main.dart for the Web...
2:04:57 AM: Target dart2js failed: Exception: Warning: The 'dart2js' entrypoint script is deprecated, please use 'dart compile js' instead.
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/fluent_ui-3.9.1/lib/src/controls/form/selection_controls.dart:26:29:
2:04:57 AM: Error: The parameter 'clipboardStatus' of the method '_FluentTextSelectionControls.buildToolbar' has type 'ClipboardStatusNotifier', which does not match the corresponding type, 'ValueListenable<ClipboardStatus>?', in the overridden method, 'TextSelectionControls.buildToolbar'.
2:04:57 AM:  - 'ClipboardStatusNotifier' is from 'package:flutter/src/widgets/text_selection.dart' ('flutter/packages/flutter/lib/src/widgets/text_selection.dart').
2:04:57 AM:  - 'ValueListenable' is from 'package:flutter/src/foundation/change_notifier.dart' ('flutter/packages/flutter/lib/src/foundation/change_notifier.dart').
2:04:57 AM:  - 'ClipboardStatus' is from 'package:flutter/src/widgets/text_selection.dart' ('flutter/packages/flutter/lib/src/widgets/text_selection.dart').
2:04:57 AM:     ClipboardStatusNotifier clipboardStatus,
2:04:57 AM:                             ^
2:04:57 AM: flutter/packages/flutter/lib/src/widgets/text_selection.dart:138:10:
2:04:57 AM: Info: This is the overridden method ('buildToolbar').
2:04:57 AM:   Widget buildToolbar(
2:04:57 AM:          ^
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_navigation/src/extension_navigation.dart:357:24:
2:04:57 AM: Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
2:04:57 AM:  - 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('flutter/packages/flutter/lib/src/scheduler/binding.dart').
2:04:57 AM:       SchedulerBinding.instance!.addPostFrameCallback((_) {
2:04:57 AM:                        ^
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_navigation/src/extension_navigation.dart:468:24:
2:04:57 AM: Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
2:04:57 AM:  - 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('flutter/packages/flutter/lib/src/scheduler/binding.dart').
2:04:57 AM:       SchedulerBinding.instance!.addPostFrameCallback((_) {
2:04:57 AM:                        ^
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_navigation/src/snackbar/snackbar.dart:452:22:
2:04:57 AM: Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
2:04:57 AM:  - 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('flutter/packages/flutter/lib/src/scheduler/binding.dart').
2:04:57 AM:     SchedulerBinding.instance!.addPostFrameCallback(
2:04:57 AM:                      ^
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_state_manager/src/rx_flutter/rx_disposable.dart:20:22:
2:04:57 AM: Warning: Operand of null-aware operation '?.' has type 'SchedulerBinding' which excludes null.
2:04:57 AM:  - 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('flutter/packages/flutter/lib/src/scheduler/binding.dart').
2:04:57 AM:     SchedulerBinding.instance?.addPostFrameCallback((_) => onReady());
2:04:57 AM:                      ^
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_state_manager/src/rx_flutter/rx_notifier.dart:130:22:
2:04:57 AM: Warning: Operand of null-aware operation '?.' has type 'SchedulerBinding' which excludes null.
2:04:57 AM:  - 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('flutter/packages/flutter/lib/src/scheduler/binding.dart').
2:04:57 AM:     SchedulerBinding.instance?.addPostFrameCallback((_) => onReady());
2:04:57 AM:                      ^
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_state_manager/src/simple/get_controllers.dart:90:20:
2:04:57 AM: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
2:04:57 AM:  - 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('flutter/packages/flutter/lib/src/widgets/binding.dart').
2:04:57 AM:     WidgetsBinding.instance!.addObserver(this);
2:04:57 AM:                    ^
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_state_manager/src/simple/get_controllers.dart:96:20:
2:04:57 AM: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
2:04:57 AM:  - 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('flutter/packages/flutter/lib/src/widgets/binding.dart').
2:04:57 AM:     WidgetsBinding.instance!.removeObserver(this);
2:04:57 AM:                    ^
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/flutter_login-3.1.0/lib/src/widgets/animated_text.dart:57:20:
2:04:57 AM: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
2:04:57 AM:  - 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('flutter/packages/flutter/lib/src/widgets/binding.dart').
2:04:57 AM:     WidgetsBinding.instance!.addPostFrameCallback((_) {
2:04:57 AM:                    ^
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_navigation/src/router_report.dart:53:22:
2:04:57 AM: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
2:04:57 AM:  - 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('flutter/packages/flutter/lib/src/widgets/binding.dart').
2:04:57 AM:       WidgetsBinding.instance!.addPostFrameCallback((_) {
2:04:57 AM:                      ^
2:04:57 AM: ../../buildhome/.pub-cache/hosted/pub.dartlang.org/fluent_ui-3.9.1/lib/src/controls/inputs/dropdown_button.dart:350:20:
2:04:57 AM: Warning: Operand of null-aware operation '?.' has type 'WidgetsBinding' which excludes null.
2:04:57 AM:  - 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('flutter/packages/flutter/lib/src/widgets/binding.dart').
2:04:57 AM:     WidgetsBinding.instance?.addPostFrameCallback((timeStamp) {
2:04:57 AM:                    ^

Hiya, sorry you are having trouble with your build.

This Support Guide contains a ton of useful debugging tips that can likely help you solve your problem :slight_smile: Additionally, this Support Guide houses all of our resources for debugging build and deploy issues.

We also recommend trying to search the forums with the build error you encountered - it’s likely your question was already asked by someone else!

If you are still having problems, please provide as much information as you can on what you have already tried, what your build settings are, your package.json, etc. Thanks!