It seems I can’t run mopidy as a service. I installed the latest release with pip (sudo python3 -m pip install --upgrade mopidy). It runs fine from a terminal.
The next step would be to add it as a service ( sudo systemctl enable mopidy) but I get “Failed to enable unit: Unit file mopidy.service does not exist.”
I have installed mopidy with apt-get and I can run it as a service but it did not work. The sound modul was crashing and version 2 vas installed