My folders have disappeared from Photos.
I've spent dozens of hours organising and categorising photos into folders within the Photos app. All my folders have suddenly disappeared. The photos themselves are still there in the chronological stream.... I just can't find what I'm looking for anymore without trawling through years worth of pictures. Super frustrating - has anyone else had this problem?? It looks like Apple has rearranged how Photos is organised, and my folders are a casualty.
MacBook Pro (15-inch Mid 2012), macOS High Sierra (10.13.4)