phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO ataricomputers_phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin, is_robot) VALUES ('1c6f0d6a2f11951eaa3ef3f04f65150e', -1, 1713439685, 1713439685, '12bf9dba', -8, 0, '0', '0')

Line : 175
File : sessions.php