phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1406 Data too long for column 'session_admin' at row 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('777f7da9d5592d572df652ed2f3a902f', -1, 1711708550, 1711708550, '23afc9f5', 0, 0, 0)

Line : 172
File : sessions.php