phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO magpies_phpBB_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('04271964ff19798013c5ca74999c1356', -1, 1656806416, 1656806416, '03ee7d4c', 34, 0, 0)

Line : 282
File : sessions.php