There are a few possible solutions for this issue:
Check if your Flutter and Dart plugins are installed and enabled in Android Studio. Go to File > Settings > Plugins and search for Flutter and Dart plugins. Make sure they are installed and enabled.
Check if your project has been initialized as a Flutter project. Make sure your project contains a pubspec.yaml file in the root directory and that it contains the required dependencies for Flutter.
Try to run the app and see if there are any errors or warnings in the console. You can also try to run the flutter clean command and then try again.
If none of the above solutions work, try deleting the .idea folder in your project directory and restart Android Studio. This will force Android Studio to recreate the project files and might solve the issue.
Hopefully, one of these solutions will solve your problem.
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