SOLVED: I can't add movies to existing collections (empty list)

[Kiwa]

Those are the internally created collection XMLs.  I meant if you had used some other tool to create the XMLs, which does not appear to be the case.

Can you share your full jellyfin log via pastebin?

I used the system of creating collections in Jellyfin (select the videos, menu, add to collection, create a new one)

Video: https://drive.google.com/file/d/1GoeydkX...sp=sharing