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 ('ef15ca0d830d6784303a4f37b0346f19', -1, 1749715419, 1749715419, 'd849d891', -9, 0, 0)

Line : 190
File : sessions.php