I am getting the following issue while building the apk :
/C:/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/win32-2.3.3/lib/src/structs.g.dart:661:31: Error: Member not found: 'UnicodeChar'. int get UnicodeChar => Char.UnicodeChar; ^^^^^^^^^^^ /C:/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/win32-2.3.3/lib/src/structs.g.dart:662:38: Error: Setter not found: 'UnicodeChar'. set UnicodeChar(int value) => Char.UnicodeChar = value; ^^^^^^^^^^^ /C:/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/win32-2.3.3/lib/src/structs.g.dart:664:29: Error: Member not found: 'AsciiChar'. int get AsciiChar => Char.AsciiChar; ^^^^^^^^^ /C:/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/win32-2.3.3/lib/src/structs.g.dart:665:36: Error: Setter not found: 'AsciiChar'. set AsciiChar(int value) => Char.AsciiChar = value; ^^^^^^^^^ /C:/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_calendar_carousel-1.5.3/lib/flutter_calendar_carousel.dart:424:16: Error: The method 'FlatButton' isn't defined for the c lass '_CalendarState'.
'_CalendarState' is from 'package:flutter_calendar_carousel/flutter_calendar_carousel.dart' ('/C:/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_calendar_carousel-1.5.3/ lib/flutter_calendar_carousel.dart'). Try correcting the name to the name of an existing method, or defining a method named 'FlatButton'. child: FlatButton( ^^^^^^^^^^ /C:/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_calendar_carousel-1.5.3/lib/src/calendar_header.dart:46:32: Error: The method 'FlatButton' isn't defined for the class 'C alendarHeader'.
'CalendarHeader' is from 'package:flutter_calendar_carousel/src/calendar_header.dart' ('/C:/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_calendar_carousel-1.5.3/lib/sr c/calendar_header.dart'). Try correcting the name to the name of an existing method, or defining a method named 'FlatButton'. Widget _headerTouchable() => FlatButton( ^^^^^^^^^^
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WARNING: This version of flutter_webview_plugin will break your Android build if it or its dependencies aren't compatible with AndroidX. See https://docs.flutter.dev/development/platform-integration/android/androidx-migration for more information on the problem and how to fix it. This warning prints for all Android build failures. The real root cause of the error may be unrelated. *********************************************************
FAILURE: Build failed with an exception.
Where: Script 'C:\flutter\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1159
What went wrong: Execution failed for task ':app:compileFlutterBuildRelease'.
Process 'command 'C:\flutter\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 1m 20s Running Gradle task 'assembleRelease'... 81.7s Gradle task assembleRelease failed with exit code 1
Link to the project source code - https://drive.google.com/drive/folders/1GaNcymRQ1SmQDln-0JpsoEG_9Gy3sOn7?usp=sharing
Please help as soon as possible.
Thank You
