FlutterPluginRegistrantGeneratedPluginRegistranth file not found

This error usually occurs when the Flutter app is not able to locate the GeneratedPluginRegistrant.h file. This file is generated automatically by Flutter when you add new plugins to your app.

To fix this error, you can try the following steps:

1. Make sure you have added the necessary plugins to your Flutter app by running the flutter packages get command.

2. Clean your Flutter app by running the flutter clean command.

3. Run the flutter run command to rebuild your app.

4. If the error still persists, try deleting the Podfile.lock file and the Pods folder in the ios directory of your Flutter app. Then run the pod install command to reinstall the dependencies.

5. Finally, try running the flutter run command again.

If none of the above steps work, try updating your Flutter version or creating a new Flutter project and copying your code over to the new project