Check if scope is already destroyed

src/views/settings.js

@@ -298,6 +298,7 @@ angular.module('Application').controller('SettingsController', ['$scope', '$loca
     function getSubscription() {
         AppStore.getSubscription($scope.appstoreConfig, function (error, result) {
             if (error) return console.error(error);
+            if (!$scope.$parent) return; // user changed view. otherwise we get an error that $scope.$parent is null
 
             $scope.subscription = result;