Hi there,   From Plex forum, this issue seems to be taken in account since a week and a few plexpass releases: "(Transcoder) GPU HDR tone mapping could unexpectedly fail on some newer Intel processors (#12534)" https://forums.plex.tv/t/plex-media-server/30447/423   Now just need to update to the last plexpass release by updating your docker container using plexpass as the version option like in the following screenshot:   Or you can wait a bit longer