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 ('87f5b7d7739b3c7803633cc0a01ece48', -1, 1713630384, 1713630384, '0395fe23', -9, 0, 0)

Line : 187
File : sessions.php