Tvheadend

Hi, I have set up tvheadend to play my iptv.
Unfortunatly, the playback stops after 3-5 min in tvheadend (if I watch tv via vlc it does not).

I have created a log file, unfortunatly there is nothing loged, which seems to be related to this.
I started the stream at 14:36.
Around 14:40, the stream stopped (image and audio is frozen).
At 14:53 I stopped the playback.
Amyone expiriences similar issues, or has an idea what could cause it?

About my setup: * I get it from the provider via multicast * I run tvheadend from the lscr.io/linuxserver/tvheadend:latest docker-image