phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO bb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('ef841024813d1fb3b7c33b11a851449e', -1, 1603621115, 1603621115, '0359570c', -12, 0, 0)

Line : 198
File : sessions.php