Ensure that all the necessary steps for the Android release are completed before proceeding. This includes configuring the app, signing it properly, and preparing it for distribution on Google Play.
To generate an appbundle, run the following command on the terminal:
flutter build appbundle
After completing the necessary steps, you will find the .aab file in the build/app/output/appbundle/release folder.
You can now upload this .aab file to the Google Play Store.