Share the output of "systemctl show jellyfin" and "sudo journalctl -u jellyfin -n 200 --no-pager". Both commands will produce a lot of text so use pastebin to share the output.
Jellyfin 10.10.3 (Docker)
Ubuntu 24.04 LTS
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
3x WD Red Pro 6TB CMR in RAIDZ1 (JF Library)