title: Uncaught referenceError : Angular is not defined
body: <p>I am seeing the error as shown in the image. 
  <a href="https://i.stack.imgur.com/nSa0S.png" rel="nofollow noreferrer">Error displayed in the console.</a></p>
  
  <p>This is my App.js code:</p>
  
  <pre><code> var app = angular.module('PopupDemo',[]);
   app.controller('PopupDemoCont',function($scope) {
   });
  </code></pre>
  
  <p>This is my HTML code:</p>
  
  <p></p>
  
  <pre><code>&lt;html&gt;
  
  &lt;head&gt;
      &lt;title&gt;SignUp&lt;/title&gt;
      &lt;meta name="viewport" content="width=device-width, initial-scale=1"&gt;
      &lt;meta charset="utf-8"&gt;
      &lt;link rel="stylesheet" type="text/css" href="signup.css"&gt;
      &lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"&gt;
      &lt;script src="js/App.js"&gt;&lt;/script&gt;
      &lt;script src="js/angular.min.js"&gt;&lt;/script&gt;
      &lt;script src="js/ui-bootstrap-tpls-0.14.3.min.js"&gt;&lt;/script&gt;
  &lt;/head&gt;
  
  &lt;body ng-app="PopupDemo"&gt;
  
      &lt;div data-toggle="validator" class="container-fluid" ng-controller="PopupDemoCont"&gt;
          &lt;h1&gt;&lt;b&gt;Sign Up&lt;/b&gt;&lt;/h1&gt;
          &lt;/br&gt;
          &lt;form id="form" name="userForm" action="Registration.html"&gt;
  &lt;/body&gt;
  
  &lt;/html&gt;
  </code></pre>
  
  <p>Can anyone fix this?</p>