404. That’s an error.
The requested URL /add?feedurl=http%3A%2F%2Fwww.choirbgam.by%2F%3Fp%3D4609 was not found on this server. That’s all we know.
/add?feedurl=http%3A%2F%2Fwww.choirbgam.by%2F%3Fp%3D4609