Dreaded "App Not Installed Package Appears To Be Invalid"

[Anke]

@Mark_Stout

And I got the error trying to load.

@vknow360

android:exported attribute is missing

Target API level 31

Not really a "simple" solution: Build the APK. Decompile it. Edit the Manifest and add android:exported="true" to each <activity ... > and <receiver ... >. Set targetSdkVersion = 31. Recompile it. Check if the app (APK) can be installed on your test devices. If so, convert the APK to AAB: https://community.niotron.com/t/convert-apk-to-aab-file/9684 (otherwise check if you missed to add android:exported="true" to every <activity> and <receiver> and continue with step 4).