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 ('cf2306c87e2df94f027bb2ee5d158992', -1, 1747436966, 1747436966, '12d99cc2', 5, 0, 0)

Line : 190
File : sessions.php