Jellyfin 10.11.0 crash when loadind some info from shows

[Kpuche]

Hello
I run jellyfin on docker on a OpenMediaVault server

I have done my migration from 10.10.7 to 10.11.0 this morning flawlessly, at first....

When I try to read a movies, show whatever from the landing page no problem.

but when in try to get into some lobraires, it crashed... (my movies librarie for example)
and in some other libraires, shows, anime, i can get into it, but if I go into a show where it should display the seasons etc. then crash again.


I tried to actualize my libraires, crashed at 96% ...
I tried to update the metadata for a library (a forced one, reset all value for image, photos etc) crash again


So I installed a new docker image of the 10.11.0 on another port, and try to do minor configuration to see if the problem is the same
I just added my movies library into this new instance, the scan is done, seems ok
I can get into the movies library this time
but if I get into a movie details, it's all messed up again and Jellyfin crash and restart again...

So I think the problem is my metadata but I don't know how to solve it... 


Example of a scramble page of a movie:
   

[Kpuche]

Update: Seems to be come from the CSS import i was using for a theme called jellyFlix, that's complety broken on 10.11.

I'm trying with "elegant fin" on a new instance and synchronizing my libraries to see if it crashed again

[Kpuche]

update again:

and no chance... fresh installation, I just put one library into the instance, movies.
I let it all afternoon get its metada scan (with extract chapter and all) but if I go on a movie detail, crash again...


I don't know what or where to look to check what's causing the crashes...

I will try to restore my previous instance to 10.10.7 tomorrow to see if I still can get a Jellyfin instance working again.

And on the other hand try to get the new one working...