thank you very much "clevertension" and a thousand thanks, even AI was not able to solve that, I was light years from guessing that altering the activity name with the f***ing ryanheise (just_audio f***ing plugin) activity name would solve the problem, really Flutter and its ecosystem sucks, just run away from this sh***y framework if you can do and afford it, and that's not the first I'm stuck for a while because of the Flutter Plugin System Hell which is way worse than the old DLL hell, definitely Flutter sucks !!!