When I attempt to view the Photos tab in either the Dropbox app, or on Dropbox web, it loads indefinitely. The loading bar cycles through its usual loading messages until it says “Almost there …” then loads no matter how long I wait. It is possible the issue may be due to the fact I recently removed a training data folder containing a very high number of images (~500,000) and now it's in a re-indexing loop, or something like that. It's been a week since that event. How can I fix this, so I can view all of my photos in one place again?