404. That’s an error.
The requested URL /add?source=atgs&feedurl=https://rongbay.com/rss/Ninh-Thuan/c100_Co-hoi-giao-thuong.rss was not found on this server. That’s all we know.
/add?source=atgs&feedurl=https://rongbay.com/rss/Ninh-Thuan/c100_Co-hoi-giao-thuong.rss