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 ('a63c9c7f7621e795fac6097af6b9354b', -1, 1713532518, 1713532518, '340e554c', -10, 0, 0)

Line : 187
File : sessions.php