phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO blitz_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('1a13120db2e9d2205ad11b8860e9e7a2', -1, 1713986961, 1713986961, '0aa8c802', 16, 0, 0)

Line : 200
File : sessions.php