fedia login error on some threads

when loading these pages:

I get this error:

500 Server error

why is that? other threads loads without issues.
how to fix?

thanks.

3 comments

Added a comment on the fedia magazine: https://fedia.io/m/fedia/t/94499/The-fedia-struggle-continues#entry-comment-979192
Sounds like the database of the instance is getting overloaded and the web server is returning 500
- maybe you're right, but I'm trying to load those threads since many days!
  and other threads loads properly.
  could it be some configuration error?