If you recently started using JMP, its possible there is a minimum version requirement for JMP 1.9.1. I know with the latest Android app, it requires 10.8+.
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)