phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('d05904ff5b5b36250daf77137bf76ac5', -1, 1713415827, 1713415827, '340e9637', -4, 0, 0)

Line : 187
File : sessions.php