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 ('edad2e5b5c7f6692f3b37b46e0412610', -1, 1713481403, 1713481403, '0389afe0', -4, 0, 0)

Line : 187
File : sessions.php