Sonarr Suddenly Cannot Add Category To qBitt?

Sonarr version (exact version): 4.0.14.2939
Mono version (if Sonarr is not running on Windows): 4.0.14.2939
OS: Ubuntu (latest version)
Debug logs: PrivateBin
Description of issue: This happened out of nowhere on my Ubuntu server. I changed literally nothing. I have Sonarr/Radarr connected with qBitt and I have Sonarr/Radarr assign a category for TV Shows & Anime shows. It’s worked flawlessly until a couple of days ago. Things are downloading properly, but Sonarr/Radarr is not categorizing them now, making it so my new downloads aren’t being imported to my media client, Jellyfin. Sonarr & Radarr are not in Docker, but the rest is. Here is an image of the error I get now:
sonarrissue

So, to re-cap, the issue happening is: My categories in Sonarr/Radarr are now suddenly not properly labeling them with qBitt. If I change the category to anything else at all, it works fine and gives the green check mark, but it won’t let me continue using the same ones I have been for forever now. Makes no sense. However, if I restart my server, then those same categories that now worked (the new ones) won’t work, but the old ones still won’t work either. I have to keep changing them and it makes no sense to me.

As said, this happened out of nowhere (possibly from updating Sonarr/Radarr recently?) and I have changed nothing. Please help. Thank you in advance.

The logs have expired, but nothing was recently changed in how Sonarr talks to qbit.

Yeah, this is probably why PrivateBin shouldn’t even be recommended by the guidelines here when posting. Anyway:

You just need to set the expiry to something more than the default (1 day).

I don’t see anything in the logs with Sonarr sending a download to qbit or even related to testing the connection to qbit.