$http.get not working in Agnular with different URLs [duplicate]

This question already has an answer here:

i have a working Angular-Module. When i change the URL (same JSON-File) it won’t work. What do i wrong?

Working Module:

angular.module('destinationsApp', []).controller('destinationsCtrl', function($scope, $http){
   $http
    .get('https://raw.githubusercontent.com/MAHUKI-Webdesign/suntrips.github.io/master/main_sub_themes-light.json')
    .then(function(itemsResponse) {
        $scope.items = itemsResponse.data.main_themes;

Not working:

angular.module('destinationsApp', []).controller('destinationsCtrl', function($scope, $http){
  $http
     .get('https://www.suntrips.de/import/main_sub_themes-light.json')
     .then(function(itemsResponse) {
        $scope.items = itemsResponse.data.main_themes;

Source: AngularJS