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 ('cc63e578ade3e3be2d431e2e8d1059ce', -1, 1760552696, 1760552696, 'd849d81b', 10, 0, 0)

Line : 172
File : sessions.php