Flutter/Dart - FlutterFirebaseMessagingPlugin.java - Build fails with Exception "error: cannot find symbol"
Update your firebase_messaging in pusbpec.yaml to version that supports null-safety (for example: firebase_messaging: ^10.0.0, and call flutter pub get from terminal
First, get the latest versions of your firebase dependencies from pub.dev
Run the commands:
flutter pub upgradeflutter pub getflutter cleanInvalidate caches and restart
and then try running the app
For me, the problem was that I updated androidx core version from 1.0.1 to 1.5.0 in my app/gradle file but I didn't update it in project level gradle file in resolutionStrategy
They both should be the same.