add error handling when reddit media url cannot be determined

socialmediadownload.py

@@ -272,10 +272,14 @@ async def handle_reddit(self, evt, url_tup):
  file_name = media_id
  await self.send_image(evt, media_url, mime_type, file_name)
  return
- if 'reddit_video' in post_data['secure_media']:
+ elif 'secure_media' in post_data and 'reddit_video' in post_data['secure_media']:
  fallback_url = post_data['secure_media']['reddit_video']['fallback_url']
- else:
+ elif 'preview' in post_data and 'reddit_video_preview' in post_data['preview']:
  fallback_url = post_data['preview']['reddit_video_preview']['fallback_url']
+ else:
+ self.log.warning(f"Unable to determine media url for {query_url}")
+ return
+
  media_url = fallback_url.split('?')[0]
  mime_type = mimetypes.guess_type(media_url)[0]