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 ('e138cce2a876e7dfc5c2f419ca451b98', '54.167.243.214', 'CCBot/2.0 (https://commoncrawl.org/faq/)', 1534353670)