Server Version#: 4.8.4 (Unraid)
Player Version#: 1.3.1.916-1cb2c34d (Windows 10)
Ever since updating to the new plex app a few weeks ago, I have been having the same issue over and over despite countless updates.
When watching a show, the plex app will randomly stop the show and I start getting the below error, over and over. The show will never start again, until I exit and restart it. The show will immediately plays until it gets another error.
This was never happening until the big new player update.