Blank artwork with "Identificate" function

Hi !

I really love Jellyfin, that I discover at the end of 2018.
Despite some round trips with Plex, I decided a few years ago to trust Jellyfin completely, whose open source development seems a little more reassuring to me than Plex’s.
However, I have problems with the identification of the covers. I indicate the name of the album, I get results, but it’s an empty cover that appears, like on the screenshots.
Is there any parameter to activate?
I remember not having encountered this problem with the
Maybe I missed something in the configuration.

Can you help me ?