404. That’s an error.
The requested URL /add?feedurl=http://panmedotrong-moorewright.sieuthithietbido.com/panmedotrong-moorewright.rss was not found on this server. That’s all we know.
/add?feedurl=http://panmedotrong-moorewright.sieuthithietbido.com/panmedotrong-moorewright.rss