It looks like this isn't a fresh install since it is scanning your library. If the service is running, double check you didn't change any firewall rules or that the LAN IP didn't change.
Jellyfin 10.10.7 (Docker)
Ubuntu 24.04.2 LTS w/HWE
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
4x WD Red Pro 6TB CMR in RAIDZ1