Suddenly unable to view photos on my Synology NAS

[ChuckPa]

If your photos are in the default Synology photos share, this can contribute to the problem. Their photo app and Plex conflict.

Also, Please see if any of this applies

Plex Media Server security changes for Synology users

Community Announcement - Synology users - Security update. Server Version#: Plex Media Server 1.15.4.994 and above By popular customer request and to improve the safety of your media, we’ve made a small but visible change to what PMS can do on your NAS by itself. We have removed user plex from the administrators group. This was a holdover from DSM 5.2 when it was required for PMS to run properly on the NAS. Now, with DSM 6 and above, this is no longer required. By doing so we’ve lower…