A Database Error Occurred

Error Number: 1364

Field 'user_data' doesn't have a default value

INSERT INTO `tbtt_session` (`session_id`, `ip_address`, `user_agent`, `last_activity`) VALUES ('4154921101e618442c64b18f45ff19fc', '216.73.216.181', 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko;', 1773701552)