Create user webhook which should send request to my backend throw an error

Help
,
1 
const request = require('request');


module.exports = function (user, context, cb) {
  console.log('webhook was started for ' + user.email)
  request.post({ 
  url: 'http://35.180.70.70/webhook', 
  body: {
  "externalId": user.id,
  "firstName": user.username,
  "email": user.email,
  "phone": user.phoneNumber
  },
  json: true,
  headers : {
      "content-type": "application/json"
  }, 
  
  function(error, response, body) { 
    console.log('-----', user);
    console.log(context);
    cb(error, response) 
}})}

I wrote webhook for “Create user” case
But, when I create a user, I see:
Access to XMLHttpRequest at ‘https://zeway.eu8.webtask.io/user-registration-hook/’ from origin ‘https://manage.auth0.com’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.
error
When I send the same request via Postman → works fine