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 ('850e0c14e1af0a0908df5bc704f34a07', -1, 1713985452, 1713985452, '0aa8c802', -9, 0, 0)

Line : 200
File : sessions.php