With all PHP Version 8.x.x we get some fatal errors in the log, but only on the new linux server and not with the windows server: [Wed May 28 17...

@sofy hi, this was my first idea, but there is absolutely no caching plugin installed on the new server. But i have more strange infos: on...

post for second pic  correct.png

problem solved, there are some old files in the used theme folder.

I got more information. The problem only appears on extended layout. Member list is broken on all selcted layouts.

after adding a topic in a empty forum, i got the same problem like on top picture.

this is an empty forum  ok.png