you the URL so we're all an HTP we make an estimate request and we see that we are getting some exception let try to format that sketched exception try/catch exception okay try it again so it tell us it's a 400 which means it's our fault and we see here somebody so what we are going to do is let's get the body okay that seems some piece of JSON so let's parse the JSON there it is so it seems that we're missing some date some query parameters query parameters yeah we get these change rates what happens if I pass all and older what happens if I