Thank you, DonManfred, that brought me two steps forward. After the savestate, some projects are running. But my main project was missing something like "transport". I also could find and install it. But now the error is: Maven artifact not found: com.google.dagger/dagger
Puh, got it!
After updating the Google Firebase Lib (point 2 here) the dagger was OK, but the next missing: firebase-encoders-json, I could find and install it with SDK-Manager. And now finally it works
I've added androidx.lifecycle:lifecycle-viewmodel-savedstate to the recommended items.
com.gooogle.firebase:firebase-encoders-json was already there. I guess that you are using an old version of B4A Sdk Manager. The latest version is 3.60.
Download the jar and copy it to the installation folder. (C:\Program Files (x86)\Anywhere Software\Basic4android) https://www.b4x.com/android/files/B4ASdkManager.jar Updates - V3.62 - AVD definitions file can now include multiple names. This solves an issue with Android Wear AVDs. - V3.60 -...