phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sub_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('f99abadf8f59b700a84e21a489520278', -1, 1714517705, 1714517705, '12778348', -8, 0, 0)

Line : 187
File : sessions.php