Cannot connect to Jellyfin server

Hi! I am having a little trouble setting up Jellyfin integration with my HA.

For reference, I am running Home Assistant on a VM on my TrueNAS server, and Jellyfin as an app on the same server.

When I try to set it up, it just fails to connect with the following log:

Logger: JELLYFIN.jellyfin_apiclient_python.connection_manager
Source: components/jellyfin/client_wrapper.py:68
First occurred: 12:38:26 PM (8 occurrences)
Last logged: 12:52:34 PM

• connect_to_address http://x.x.x.x:30013 failed

I have tried to use my tailscale adress aswell, and different users, nothing works. I can access the Jellyfin server using the same adress as I am trying here. Any help would be apreciated, thanks.