Error Build failed

[assang]

Launching lib\main.dart on Lenovo K8 Plus in debug mode...

Compiler message: lib/main.dart:16:57: Error: Unexpected token ';'. import 'package:gallery/themes/gallery_theme_data.dart';; ^ Running Gradle task 'assembleDebug'... lib/pages/backdrop.dart:163:19: Error: No named parameter with the name 'includeSemantics'. includeSemantics: false, ^^^^^^^^^^^^^^^^ ../flutter/packages/flutter/lib/src/widgets/raw_keyboard_listener.dart:38:9: Context: Found this candidate, but the arguments don't match. const RawKeyboardListener({ ^^^^^^^^^^^^^^^^^^^ lib/pages/backdrop.dart:172:17: Error: The method 'ExcludeFocus' isn't defined for the class '_BackdropState'.

• '_BackdropState' is from 'package:gallery/pages/backdrop.dart' ('lib/pages/backdrop.dart'). Try correcting the name to the name of an existing method, or defining a method named 'ExcludeFocus'. : ExcludeFocus(child: _settingsPage), ^^^^^^^^^^^^ lib/demos/material/text_field_demo.dart:225:21: Error: The getter 'FilteringTextInputFormatter' isn't defined for the class 'TextFormFieldDemoState'.
• 'TextFormFieldDemoState' is from 'package:gallery/demos/material/text_field_demo.dart' ('lib/demos/material/text_field_demo.dart'). Try correcting the name to the name of an existing getter, or defining a getter or field named 'FilteringTextInputFormatter'. FilteringTextInputFormatter.digitsOnly, ^^^^^^^^^^^^^^^^^^^^^^^^^^^ lib/studies/crane/backlayer.dart:38:11: Error: The method 'ExcludeFocus' isn't defined for the class '_BackLayerState'.
• '_BackLayerState' is from 'package:gallery/studies/crane/backlayer.dart' ('lib/studies/crane/backlayer.dart'). Try correcting the name to the name of an existing method, or defining a method named 'ExcludeFocus'. ExcludeFocus( ^^^^^^^^^^^^

Compiler message: lib/main.dart:16:57: Error: Unexpected token ';'. import 'package:gallery/themes/gallery_theme_data.dart';; ^ lib/pages/backdrop.dart:163:19: Error: No named parameter with the name 'includeSemantics'. includeSemantics: false, ^^^^^^^^^^^^^^^^ ../flutter/packages/flutter/lib/src/widgets/raw_keyboard_listener.dart:38:9: Context: Found this candidate, but the arguments don't match. const RawKeyboardListener({ ^^^^^^^^^^^^^^^^^^^ lib/pages/backdrop.dart:172:17: Error: The method 'ExcludeFocus' isn't defined for the class '_BackdropState'.

• '_BackdropState' is from 'package:gallery/pages/backdrop.dart' ('lib/pages/backdrop.dart'). Try correcting the name to the name of an existing method, or defining a method named 'ExcludeFocus'. : ExcludeFocus(child: _settingsPage), ^^^^^^^^^^^^ lib/demos/material/text_field_demo.dart:225:21: Error: The getter 'FilteringTextInputFormatter' isn't defined for the class 'TextFormFieldDemoState'.
• 'TextFormFieldDemoState' is from 'package:gallery/demos/material/text_field_demo.dart' ('lib/demos/material/text_field_demo.dart'). Try correcting the name to the name of an existing getter, or defining a getter or field named 'FilteringTextInputFormatter'. FilteringTextInputFormatter.digitsOnly, ^^^^^^^^^^^^^^^^^^^^^^^^^^^ lib/studies/crane/backlayer.dart:38:11: Error: The method 'ExcludeFocus' isn't defined for the class '_BackLayerState'.
• '_BackLayerState' is from 'package:gallery/studies/crane/backlayer.dart' ('lib/studies/crane/backlayer.dart'). Try correcting the name to the name of an existing method, or defining a method named 'ExcludeFocus'. ExcludeFocus( ^^^^^^^^^^^^ Target kernel_snapshot failed: Exception: Errors during snapshot creation: null build failed.

FAILURE: Build failed with an exception.

• Where: Script 'C:\src\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 882

• What went wrong: Execution failed for task ':app:compileFlutterBuildDebug'.

  Process 'command 'C:\src\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 59s Exception: Gradle task assembleDebug failed with exit code 1

[guidezpl]

Please read the README :) Duplicate of #152