I am having some problems from time to time. I sometimes get the dreaded “an error has occurred” when trying to watch Live TV, I have to hit the play button 2-5 more times and it finally plays. This is random it does not happen every time. I really want to get this ongoing problem solved. I have logs and would be willing to PM then to Plex support staff.
I have similar issue with Android TV. I can see exception in android logs. What is your setup? server running on which HW and what clients do you use? Have you checked the logs if errors are seen on server side of client side?