Creating new private chat portals fails

[tulir]

[2019-02-15 13:11:33,828] [[email protected]] Failed to handle Telegram update
Traceback (most recent call last):
  File "/mautrix_telegram/abstract_user.py", line 142, in _update_catch
    await self._update(update)
  File "/mautrix_telegram/abstract_user.py", line 195, in _update
    await self.update_message(update)
  File "/mautrix_telegram/abstract_user.py", line 384, in update_message
    return await portal.handle_telegram_message(self, sender, update)
  File "/mautrix_telegram/portal.py", line 1575, in handle_telegram_message
    await self.create_matrix_room(source, invites=[source.mxid], update_if_exists=False)
  File "/mautrix_telegram/portal.py", line 349, in create_matrix_room
    return await self._create_matrix_room(user, entity, invites)
  File "/mautrix_telegram/portal.py", line 391, in _create_matrix_room
    power_levels = self._get_base_power_levels({}, entity)
  File "/mautrix_telegram/portal.py", line 423, in _get_base_power_levels
    levels["invite"] = 50 if entity.default_banned_rights.invite_users else 0
AttributeError: 'User' object has no attribute 'default_banned_rights'