Missing playlists and cannot import them

Issue description:

My device is missing 60% of playlists and adding them again does not make them show up.

Logs:

debug-20230806_230814.zip (9.7 MB)

And I’m supposed to guess the one missing in a 70 MB log?

2023-08-06 23:07:37.864 Verbose/SubsonicLogger: --> [254] GET http://pithos:3027/rest/star.view?albumId=spotify:album:2s1ncecjzOlqbTDhnPAWhn
2023-08-06 23:07:37.868 Verbose/SubsonicLogger: <-- [254] 404 Not Found http://pithos:3027/rest/star.view?albumId=spotify:album:2s1ncecjzOlqbTDhnPAWhn&u=REDACTED&t=REDACTED&s=REDACTED&v=1.13.0&c=Symfonium&f=json (4ms, 0-byte body)
2023-08-06 23:07:37.868 Verbose/SubsonicLogger: <-- [254] 0 content length
2023-08-06 23:07:37.868 Error/SubsonicLogger: Request Error: 404 []

BTW your server does not implement the star endpoint and return the wrong error …

Most of them were missing. The specific playlist I tried to add was ‘become the villain’.

You have the offline filter enabled so only playlist with offline content are visible.

You really need to fix the star endpoint else Symfonium will try to sync and you consume tons of network and storage for nothing.