Where are you looking for the log? You can look in the Jellyfin Dashboard. In the left frame close to the bottom. Or in C:\ProgramData\Jellyfin\Server.
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