I am also experiencing this issue to the point where my phone has crashed and restarted multiple times when attempting to play any form of audio while the Airpod Pros are connected. I do have an Apple Watch and this appears to be interfering with the Bluetooth of the Airpods, therefore I used the workaround suggested by others to disconnect the Bluetooth on the Apple watch, then reconnect the Airpods. The audio then loaded without issue and after reconnecting the Bluetooth on the Apple watch, it is still working. Albeit, this has been very frustrating and after seeing how long this has been going on for, we can only hope Apple addresses this clearly common issue.