Error while building application using Ext JS
<p>I am getting the following error while running Sencha application build production.</p>

<p><a href="https://i.stack.imgur.com/XK4kr.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XK4kr.jpg" alt=""></a></p>

<p>Login.js</p>

<blockquote>
  <p><code>xtype: 'login',
      extend: 'Ext.window.Window',
      requires: [
      'Ext.window.Window',
          'MyApp.view.login.LoginController',
          'Ext.form.Panel'
      ],</code></p>
</blockquote>

<p>Application.js</p>

<pre><code>Ext.define('MyApp.Application', {
extend: 'Ext.app.Application',
requires: [
'Ext.window.Window'

],
name: 'MyApp',
</code></pre>

<p>App.js</p>

<pre><code>Ext.application({
name: 'MyApp',

extend: 'MyApp.Application',

requires: [
    'MyApp.view.login.Login',
    'Ext.window.Window'
],
</code></pre>