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 ('79b420c3106cd8b0df93858b36bfe20a', -1, 1711708844, 1711708844, '36cdf373', 11, 0, 0)

Line : 172
File : sessions.php