New media files won't play

[Fate]

Code:

[matroska,webm @ 0x55af7b801c80] Format matroska,webm detected only with low score of 1, misdetection possible!
[matroska,webm @ 0x55af7b801c80] 0x00 at pos 0 (0x0) invalid as first byte of an EBML number
[matroska,webm @ 0x55af7b801c80] EBML header parsing failed

Either jellyfin can't access the files (did you compare permissions to your old files) or the file is damaged.