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 ('49a34cd3601667e8ceebb16eb9a8a63c', -1, 1713439217, 1713439217, '038b619d', 0, 0, 0)

Line : 187
File : sessions.php