Option 1: Disable Sync My Watch State & Ratings in your Account Settings.
Option 2: Roll back to 1.40.4 or earlier release (but not earlier than 1.31.2).
There is a bug in 1.40.5.8854. If Sync Watch State is enabled on the server owner’s account, PMS will crash.
This affects Synology NAS with ARMv7 CPUs, such as the DS215j. NAS with Intel/AMD 64-bit CPUs are not affected.
Plex is aware of the problem. It appears to be fixed in 1.41.0 which has yet to be released.
Additional Information: New PMS Version 1.40.5.8854 stops running after some minutes on Synology DS215j - #38 by ChuckPa
From Plex Media Server.log:
Aug 18, 2024 15:43:30.458 [907776880] DEBUG - [ViewStateSync] Starting
Aug 18, 2024 15:43:30.458 [907776880] DEBUG - [ViewStateSync] Fetching user tokens
Aug 18, 2024 15:43:30.458 [907776880] DEBUG - [ViewStateSync/HCl#3e] HTTP requesting GET https://plex.tv/api/v2/server/users/services?auth_token=xxxxxxxxxxxxxxxxxxxx
Aug 18, 2024 15:43:30.623 [852644720] DEBUG - [HttpClient/HCl#3e] HTTP/2.0 (0.2s) 200 response from GET https://plex.tv/api/v2/server/users/services?auth_token=xxxxxxxxxxxxxxxxxxxx
Aug 18, 2024 15:43:30.662 [854754160] DEBUG - [ViewStateSync] Got token for user 1 (RTiquo)
Aug 18, 2024 15:43:30.662 [854754160] DEBUG - [ViewStateSync/HCl#3f] HTTP requesting GET https://plex.tv/api/v2/server/users/11716866/view_state_sync
Aug 18, 2024 15:43:30.708 [852644720] DEBUG - [HttpClient/HCl#3f] HTTP/2.0 (0.0s) 200 response from GET https://plex.tv/api/v2/server/users/11716866/view_state_sync (reused)
Aug 18, 2024 15:43:31.243 [909886320] ERROR - [Notify] Error while reading inotify fd (4)
Aug 18, 2024 15:43:31.490 [854754160] DEBUG - [ViewStateSync/JobRunner] Job running: /volume1/@appstore/PlexMediaServer/CrashUploader "--directory=/var/packages/PlexMediaServer/shares/PlexMediaServer/AppData/Plex Media Server/Crash Reports/1.40.5.8854-f36c552fd" --version=1.40.5.8854-f36c552fd --platform=Linux "--platformVersion=DSM 7.1.1.42962-5" --serverUuid=43ccb09f0c1a6ef927ea966879e68afb62f34ac8 --userId=rtiquo@hotmail.com --sentryUrl=https://o17675.ingest.sentry.io/api/1233455/ --sentryKey=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx --vendor=Synology --model=armv7l --device=DS215j --sessionStatus=crashed --sessionStart=1723988544 --sessionDuration=67
