Hotslogs has changed, if it only finds one player with the given name it will immediately show that player, hence there will be no table to retrieve the MMR from.
Ravilan: !rating Ravilan
Hotsbot: AttributeError: 'NoneType' object has no attribute 'previous_sibling' (file "/home/ubuntu/.willie/modules/hots.py", line 96, in hotslogs_rating)
Hotslogs has changed, if it only finds one player with the given name it will immediately show that player, hence there will be no table to retrieve the MMR from.