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 ('834bfa97e8c4a0526f3bb7d28b53438b', -1, 1752049666, 1752049666, 'd849d87d', 42, 0, 0)

Line : 190
File : sessions.php