Photo (Pictures) Library won’t load any Photos (Pictures) library is empty?
Without any more specific details it’s impossible to determine what your problem could be.
Things like, was it working before? Which server version are you using? Which client application are you using? Where are you pointing the library to?
Providing the steps you took to get to the point you’re stuck would be useful.
I have same problem. Using current Plex version on my QNAP NAS, but if you need specific version info can provide later when home. I have not used this feature of Plex before. My photos are organized in hundreds of sub folders with \NAS/Media/Photos as the root photo directory. When I add the \NAS/Media/Photo folder to Plex Photo library, the library is empty after scan. I do not want add each individual photo sub folder to library. Thought Plex would find photos in all the sub folders.