A Database Error Occurred

Error Number: 1364

Field 'user_data' doesn't have a default value

INSERT INTO `ci_sessions` (`session_id`, `ip_address`, `user_agent`, `last_activity`) VALUES ('a1ad4316373a3565fa59657e0be4a3e5', '216.73.217.88', 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko;', 1791506505)