AngularJS Instructions Step 4

Under AngularJS’s “learn” section, instructions part :

When I tried to run the program, it gives the error message -------------------------------------------------
“Did you change the value of title to your own string?”

What does this error message mean ?

Can you please post the link to the exact exercise you are stuck on, together with your code:

https://www.codecademy.com/en/courses/learn-angularjs/lessons/your-first-app/exercises/your-first-app-hello-angularjs-ii?action=resume

app.js — var app = angular.module(“myApp”, );

index.html —

<!doctype html>

<!-- Include the AngularJS library -->
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.5/angular.min.js"></script>

Book End

 <div class="main" ng-controller="MainController">

    <h1>{{ title }}</h1>

  </div>
</div>

<div class="footer">
  <div class="container">
    <h2>Available for iPhone and Android.</h2>
    <img src="https://s3.amazonaws.com/codecademy-content/projects/shutterbugg/app-store.png" width="120px" />
    <img src="https://s3.amazonaws.com/codecademy-content/projects/shutterbugg/google-play.png" width="110px" />
  </div>
</div>


<!-- Modules -->
<script src="js/app.js"></script>

<!-- Controllers -->
<script src="js/controllers/MainController.js"></script>

MainController.js

app.controller(‘MainController’, [’$scope’, function($scope.) {
$scope.helloworld = ‘Top Sellers in Books’;
}]);