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 ('e9bcad72c9bcf69f30d4766a0185565b', -1, 1638262755, 1638262755, '0359cc7f', -11, 0, 0)

Line : 187
File : sessions.php