What kind of network shares are these? NFS or SMB/CIFS? Did the user that is running Jellyfin all map these network shares? Or were they mapped by another user?
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)