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 ('1fec8aa3da6c9c05777d9f4fa4d52457', -1, 1638900313, 1638900313, '3650add9', -4, 0, 0)

Line : 172
File : sessions.php