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 ('2af785eb55b840d1b14b6936fab3a0e3', -1, 1713978134, 1713978134, '0aa8c802', 14, 0, 0)

Line : 200
File : sessions.php