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 ('bb90bba19c35b65a3e8edb2c40609809', -1, 1713305873, 1713305873, '1276c856', -4, 0, 0)

Line : 172
File : sessions.php