Mopidy Discourse

Problem streaming from URL

for years I am running mopidy on a internet radio without problems. Recently, Deutschlandradio changed the URLs and now its failing (Unsere Streaming-Adressen im Einzelnen) Adding any of these addresses to the playlist fails with:
WARNING [StreamBackend-5] mopidy.internal.http Download of ‘’ failed due to download taking more than 4.995s
Any idea how to fix it?