[videos] Add video to play again media

vrobbler/apps/scrobbles/views.py

@@ -604,8 +604,7 @@ def scrobble_start(request, uuid):
             "[scrobble_start] media object not found",
             extra={"uuid": uuid, "user_id": user.id},
         )
-        # TODO Log that we couldn't find a media obj to scrobble
-        return
+        raise Exception("No media object provided to scrobble")
 
     scrobble = None
     user_id = request.user.id