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 ('58bf8d7812566c8450cb945e0ee2abdc', -1, 1713918925, 1713918925, '0d3a2717', 6, 0, 0)

Line : 187
File : sessions.php