String contains non ISO-8859-1 code point.

<html ng-app="app">
<head>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
  <script src="lib/script.js"></script>
</head>
<body>
  <div ng-controller='HelloController'>
    <p>{{greeting.text}}, World</p>
  </div>
</body>
</html>

/* Add your styles here */

angular.module('app', [])

.controller('HelloController', function($scope, $http) {
  
  $scope.greeting = {};
  $scope.greeting.text = 'Hello';
  $http({
        method: 'post',
        url: 'https://www.google.nl',
        headers: {
          'chinese':'中國網站',
        },
    }).then(response => console.log(response.data))
        .catch(error => console.log(error.data));
});