code: def unblock(self, item: str) -> None:
          
          assert item is not None
          item = self._encode_item(item)
          watchlist_key = self.__redis_conf['watchlist_template'].format(item)
          blacklist_key = self.__redis_conf['blacklist_template'].format(item)
          connection = self.__get_connection()
          connection.delete(watchlist_key)
          connection.delete(blacklist_key)
          BlackRed.__release_connection(connection)
docs: Unblock an item and/or reset it's fail count
  
          :param str item: The item to unblock