Getting error using auth service in angular fullstack@3.8.0

[akshayseth]

Hello,
I am using Auth.getCurrentUser but in browser it is giving me an error which is below:
angular.js:13236 TypeError: Cannot read property 'getCurrentUser' of undefined
at new AdvertisementComponent (advertisement.controller.js:7)
at Object.invoke (angular.js:4604)
at extend.instance (angular.js:9855)
at nodeLinkFn (angular.js:8927)
at angular.js:9231
at processQueue (angular.js:15552)
at angular.js:15568
at Scope.$eval (angular.js:16820)
at Scope.$digest (angular.js:16636)
at Scope.$apply (angular.js:16928)

Below is my code:
'use strict';

(function () {

class AdvertisementComponent {
constructor($scope, Upload, $http, $timeout, Auth) {
var userDetails = Auth.getCurrentUser;
$scope.uploadPic = function (file) {
$scope.advert.userDetails = {
"name": userDetails.name,
"email": userDetails.email,
"role": userDetails.role
}
console.log($scope.advert)
file.upload = Upload.upload({
url: '/api/uploaders/uploads',
method: 'POST',
fields: {
details: $scope.advert
},
file: file,
fileFormDataName: 'photo'
});

    file.upload.then(function (response) {
      console.log("Postcontroller: upload then ");
      $timeout(function () {
        file.result = response.data;
      });
    }, function (response) {
      if (response.status > 0)
        $scope.errorMsg = response.status + ': ' + response.data;
    });

    file.upload.progress(function (evt) {
      // Math.min is to fix IE which reports 200% sometimes
      file.progress = Math.min(100, parseInt(100.0 * evt.loaded / evt.total));
      console.log("PostController: upload progress " + file.progress);
    });
    file.upload.success(function (data, status, headers, config) {
      // file is uploaded successfully
      console.log('file ' + config.file.name + 'is uploaded successfully. Response: ' + data);
      console.log(data);
    });
  }
}

}

angular.module('ctrlCApp')
.component('advertisement', {
templateUrl: 'app/advertisement/advertisement.html',
controller: 'AdvertisementComponent'
})
.controller('AdvertisementComponent', AdvertisementComponent);
AdvertisementComponent.$inject=['Upload','Auth'];
})();