Problem with specific RSS feed


Im trying to get the following RSS feed to work with the current xibo docker (2.1.1) release:
also tried:" rel=“self” type="application/rss+xml

The log shows me:
Unable to parse feed: Unable to detect feed format
Unable to parse feed: XML parsing error

But in every feed viewer it works…
Is there a way to get this feed working?


Just found this rss validator -> which says that the posted link is a valid feed…