When I just randomly checked it had crashed.
On the screen I actually saw a way longer stacktrace then I can see in the log. Unfortunately I can't scroll back in my terminal to get the original error message - I just assumed everything would be in the logfile.
I've attached the log and the save.
Actually a few minutes after I submitted this bug report my other server crashed as well.
I managed to get the not-in-the-logfile-log

Cheers,
Titan21