Every single night at around 21:15 BST My PMS will randomly stop working for 45 mins-1 hour. It either times out or returns “503 service unavailable”. My scheduled tasks are not set to perform at this time so I am not sure if something is wrong with my device. Logs don’t say anything helpful
If you are doing any complicated media serving, the PMS/MCH is probably not the combination you are looking for.
Scheduled Tasks
Plex Media Server settings related maintenance performed via Scheduled Tasks. You can access these under Settings > Server > Scheduled Tasks in Plex Web App.