Messing up

[Lenos]

(Thanks for the effort)
This is the outcome:

root@openmediavault:~# cat /etc/apt/sources.list.d/jellyfin.sources

sudo apt list --installed | grep jellyfin
Types: deb
URIs: https://repo.jellyfin.org/debian
Suites: bookworm
Components: main
Architectures: amd64
Signed-By: /etc/apt/keyrings/jellyfin.gpg

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

jellyfin-ffmpeg7/onbekend,now 7.0.2-8-bookworm amd64 [geïnstalleerd,automatisch]
jellyfin-server/onbekend,now 10.10.3+deb12 amd64 [geïnstalleerd,automatisch]
jellyfin-web/onbekend,now 10.10.3+deb12 all [geïnstalleerd,automatisch]
jellyfin/onbekend,now 10.10.3+deb12 all [geïnstalleerd]