I have several Chromecast devices connected to sound systems in my house. I also have a Max Hub display. I used to be able to send a VLC music stream from my phone to these devices.
If I try to now, the devices show in the list, and if I select one, it says "Connected to renderer Max Hub" (or whatever device I select). However, when I launch the stream it says "The location {stream URL} cannot be played now".
The same stream plays directly through the phone speakers.