Previously, my Plex Media Server (PMS) works smoothly on my ClearOS server. But now, I cannot change the subtitle mode on my PMS. I've tried to restart both the PMS and even the server it self but no luck. I got the following error when I tried to change the subtitle mode. Any suggestion?
The error message was "There was a problem saving your server setting". I don't know why and how to resolve this problem.