404. That’s an error.
The requested URL /add?feedurl=http://xn--ickwar6c4gw19qk5h1t6dtt1a.club/polaesute/ror.xml was not found on this server. That’s all we know.
/add?feedurl=http://xn--ickwar6c4gw19qk5h1t6dtt1a.club/polaesute/ror.xml