Home Assistant cast stopped working

I used Home Assistant cast for several month now without problems. But today I wanted to add a second script that should cast something and saw it does not work. When I tried the other script that cast in the morning stuff for my wife before she start working also this script does not work anymore. I also tried the sample from the blog entry but also here I only get a white page on my tv. So it tries to cast but can not show anything then a white page. Not sure when it happened, my wife does not really give feedback if something stopped working.

Anbot else has that problem or could solve it? Or is that a known bug with the cast integration?

I tried to re install the integration with no change. But as said also the sample link from the blog does only show a white page.