Movies hang (I/O error)

[galapia]

Jellyfin is installed in the internal NVMe of the NUC. Media are installed in the external NVMe drive, on USB.

The compose file:
version: "2.1"
services:
jellyfin:
image: lscr.io/linuxserver/jellyfin:latest
container_name: jellyfin
environment:
- PUID=0
- PGID=0
- TZ=Europe/Berlin
- VERSION=docker
volumes:
- /home/galapia/jellyfinDocker/configconfig
- /home/galapia/jellyfinDocker/cachecache
- /media/externalDrivemedia
devices:
- /dev/dridev/dri
restart: unless-stopped
network_mode: host