Post acess_token for twitter API

I am posting to access_token but the page keeps loding and the response is blank.

app.post('https://api.twitter.com/oauth/access_token?'+querystring.stringify(token_and_oauth_verifier), function (req1, res1) {
 
  console.log("got somethig"+req1);
  console.log(res1);
})

What can I be doing wrong?
If needed , my project link