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 10.10.7 (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