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 ('40f1e47d04c17dd5fa6e9c0d046dd8ff', -1, 1751033323, 1751033323, 'd849d85d', -16, 0, 0)

Line : 189
File : sessions.php