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 ('577016c4ab73b07b6d5634b81ec7cf6a', -1, 1711632063, 1711632063, '36cdeead', 2, 0, 0)

Line : 172
File : sessions.php