fix: Add error handling around update_plex_item to prevent hang (#202)

Contents/Code/plex_api_helper.py

@@ -502,7 +502,10 @@ def process_queue():
     """
     while True:
         rating_key = q.get()  # get the rating_key from the queue
-        update_plex_item(rating_key=rating_key)  # process that rating_key
+        try:
+            update_plex_item(rating_key=rating_key)  # process that rating_key
+        except Exception as e:
+            Log.Exception('Unexpected error processing rating key: %s, error: %s' % (rating_key, e))
         q.task_done()  # tells the queue that we are done with this item