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 ('ff2860133400472c01a720c6f6a67269', '54.160.187.160', 'CCBot/2.0 (http://commoncrawl.org/faq/)', 1474836467)