title: CakePHP 3 - View class "CsvView.csv" is missing issue
body: <p>I'm trying to include a csv exporter in my application, And i used <a href="https://github.com/FriendsOfCake/cakephp-csvview" rel="nofollow noreferrer">https://github.com/FriendsOfCake/cakephp-csvview</a>. </p>
  
  <p>It works fine on my local machine but for some reason it doesn't work on my server. It throws me <strong>View class "CsvView.csv" is missing.</strong> error. Is there a way to fix this issue? </p>
  
  <p>Here's my controller for reference</p>
  
  <pre><code>public function export() {
      $this-&gt;response-&gt;download('export.csv');
  
      // $opts1['order'] = array('Blogs.created' =&gt; 'desc');
      // $blogsinfos = $this-&gt;Blogs-&gt;find('all',$opts1);
  
  
      $opts1['order'] = array('Incomes.title' =&gt; 'desc');
      $data = $this-&gt;Incomes-&gt;find('all',$opts1)-&gt;toArray();
  
  
      $_serialize = 'data';
      // Give the needed the colums to extract 
      $_extract = ['id', 'title' ,'description' , 'created' , 'amount'];
  
      //headings for the CSV
      $_header = ['ID', 'Title' ,'Description' , 'Created' , 'Amount'];
      $this-&gt;set(compact('data', '_serialize', '_header', '_extract'));
  
  
      $this-&gt;viewBuilder()-&gt;className('CsvView.csv');
      return;
  } 
  </code></pre>
  
  <p>Code to create the downloadable link. </p>
  
  <pre><code>&lt;?= $this-&gt;Html-&gt;link('Monthly Report', [
          'controller' =&gt; 'incomes', 
          'action' =&gt; 'export',
          '_ext' =&gt; 'csv'
          ],
  
          ['class' =&gt; 'btn btn-success']) 
        ?&gt;
  </code></pre>
  
  <p>I'm using CakePHP 3.4.7. </p>