404. That’s an error.
The requested URL /add?feedurl=https://thuoccapcokhi-mitutoyo.sieuthithietbido.com/thuoc-cap-co-khi-mitutoyo-160-101.rss was not found on this server. That’s all we know.
/add?feedurl=https://thuoccapcokhi-mitutoyo.sieuthithietbido.com/thuoc-cap-co-khi-mitutoyo-160-101.rss