MMA accompaniment not running on musescore

[guitartone]

I installed WPython64 and MMA. It doesn´t run. Error message occurs as folls:
MMA accompaniment is ready for you, but we could not generate the MIDI file from it.
Please fix the following error:

C:\Program Files\MuseScore 3\bin>cd C:\WPython64\mma-bin-19.08\

C:\WPython64\mma-bin-19.08>..\python-3.10.3.amd64\python.exe mma.py -f C:/Users/username/AppData/Local/Temp/Unbenannt_MMA.mid C:/Users/username/AppData/Local/Temp/Unbenannt_MMA.mma

The generated MMA file is nevertheless available at "C:/Users/username/AppData/Local/Temp/Unbenannt_MMA.mma"