It happens exactly the same when I try to play music from my phone through Bluetooth. Sometimes an error is different but I don’t remember the message. And yeah, sometimes it’s playing music but there’s no sound.Error device looks like the disc player is broken... will it play radio, or Bluetooth from your phone?
If there was an amp problem, the CD should still show as "playing" even with no sound. That is not to say for sure your amp is okay. But I suspect your CD player is not okay.