Error playing musik on Sonos speaker with Jellyfin Integration

Hello,

I am trying to play musik from my Jellyfin server on a Sonos speaker but get the following errormessage:
`Error calling SonosMediaPlayerEntity._play_media on media_player.wohnzimmer: UPnP Error 714 received: Illegal MIME-Type from 192.168.x.x’

I use the Sonos for TTS for over a year now but can’t get it to play musik from HA.

Anyone ideas what could be the problem?

Same problem here, can not play music from jellyfin to my sonos
Playing the same files through music assistant does works