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 ('dc2af733da76e7e36d79d45b6a9cc252', -1, 1713983578, 1713983578, '0aa8c802', 8, 0, 0)

Line : 200
File : sessions.php