404. That’s an error.
The requested URL /add?feedurl=http%3A%2F%2Fwww.lioznonews.by%2Fpower%2F%25d0%25b4%25d0%25b8%25d1%2580%25d0%25b5%25d0%25ba%25d1%2582%25d0%25b8%25d0%25b2%25d1%258b-%25d0%25be-%25d1%2580%25d0%25b0%25d0%25b7%25d0%25b2%25d0%25b8%25d1%2582%25d0%25b8%25d0%25b8-%25d1%2581%25d0%25b5%25d0%25bb%25d1%258c%25d1%2581%25d0%25ba%25d0%25be%25d0%25b3%25d0%25be-%25d1%2585%25d0%25be%25d0%25b7%25d1%258f%25d0%25b9%2F
was not found on this server. That’s all we know.