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 ('2477d47a4f79b9fd2026bf0893cc7897', -1, 1713496409, 1713496409, '03889a67', -10, 0, 0)

Line : 187
File : sessions.php