phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO magpies_phpBB_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a4991c09b0e23d1f8a6f5a83f730b009', -1, 1656801087, 1656801087, '03ee7d4c', 24, 0, 0)

Line : 282
File : sessions.php