Add this line on top of main.dart
// @dart=2.9
then run $flutter clean && flutter pub get
you can try this command also.
flutter build apk --release --no-sound-null-safety
Flutter APK Errors while build apk command running?
Add this line on top of main.dart
// @dart=2.9
then run $flutter clean && flutter pub get
you can try this command also.
flutter build apk --release --no-sound-null-safety