Home sharing to display photo libraries no longer works.

I have been using home sharing and Apple TV’s to stream my photo libraries to the Apple TV’s around the house for years. Suddenly a few months ago it just stopped working. None of the Apple TV’s can load or sometimes even find the photos library. I have quadruple checked all settings, media sharing, Apple TV settings, etc from every guide that mentions anything related to these processes in the Apple support environment and no luck. Any help??