title: ExtJs- TreeStore AJAX Proxy not sending request to Server or TreeStore is not loading
body: <p>Ext js TreeStore is not loading</p>
  
  <pre><code>Ext.ns('App');
  
  Ext.onReady(function() {
    Ext.QuickTips.init();
    App.PPPExplorer.init(); 
  });
  
  
  App.PPPExplorer = {
  
  // Initialize application
  init : function(serverCfg) {        
      this.PPP = this.createPPP();
  },
  
  createPPP : function() {
  
  
  // Set up a model to use in our Store
  Ext.define('Summary', {
    extend: 'Ext.data.Model',
    fields: [
       {name: 'pid', type: 'string'}
    ]
  });
  
  var myStore = Ext.create('Ext.data.TreeStore', {
   model: 'Summary',
   storeId:'myStore',
   proxy: {
       type : 'ajax',
       method: 'GET',
       url: '/Explorer.do?method=getPPP&amp;search=true',
       reader: {
           type: 'json'
       },
       root: {
           pid: 'src',
           text:'test',
           expanded: true
       },
   },
   autoLoad: true
   });
  
  Ext.create('Ext.tree.Panel', {
      title: 'Simple Tree',
      width: 200,
      height: 150,
      store: myStore,
  //      rootVisible: true,
      renderTo: 'Explorer',
  
  
          columns: [{
               xtype: 'treecolumn', //this is so we know which column will show the tree
               text: 'Reference',
               flex: 2,
               sortable: true,
               dataIndex: 'pid',
               locked: true
          }]
  });
  
  
    }
  }
  </code></pre>
  
  <p>I am using Ext js 4.2 Version</p>
  
  <p>I have used treeStore, treePanel in the above code, somehow Proxy call is not sent to Server. There was no error message in the console</p>
  
  <p>Thanks in advance</p>