Stock Music App crashes when I add to Playlist

Using /e/OS Troubleshooting
1

When I try to add songs to my Playlists the App crashes on my Fairphone 6 using e/os.

It used to work properly, but now I can create Playlists but cannot add anything to them, without the Music App immediately crashing. Any ideas?

2

the Music app is a fork of Twelve. It’s catalogued in the LineageOS bugtracker - Twelve - Crash upon clicking "Add or remove from playlists" (#10137) · Issues · LineageOS / issues / android · GitLab

from that logcat.txt:

E AndroidRuntime: FATAL EXCEPTION: main
..
E AndroidRuntime: java.lang.ClassCastException:
org.lineageos.twelve.models.Provider cannot be cast to
org.lineageos.twelve.models.ProviderIdentifier

when adding, is there anything special (sdcard or remote file) about the origin of the files?

3

it does have the music on an SD card, but that was no problem before.