Temporary fix for metadata media_info

plexpy/notification_handler.py

@@ -326,9 +326,9 @@ def build_media_notify_params(notify_action=None, session=None, timeline=None, *
 
     ## TODO: Check list of media info items, currently only grabs first item
     media_info = media_part_info = {}
-    if 'media_info' in metadata:
+    if 'media_info' in metadata and len(metadata['media_info']) > 0:
         media_info = metadata['media_info'][0]
-        if 'parts' in media_info:
+        if 'parts' in media_info and len(media_info['parts']) > 0:
             media_part_info = media_info['parts'][0]
 
     stream_video = stream_audio = stream_subtitle = False