title: PHP "Exception not found"
body: <p>I have a somehow funny issue.
  While trying to understand why a certain website returns http code 500 to browser, I found the message</p>
  
  <pre><code>PHP Fatal error:  Class 'MZ\\MailChimpBundle\\Services\\Exception' not found in /var/www/website/vendor/bundles/MZ/MailChimpBundle/Services/MailChimp.php on line 41
  </code></pre>
  
  <p>in apache log.
  Looking at the mentioned line:</p>
  
  <pre><code>throw new Exception('This bundle needs the cURL PHP extension.');
  </code></pre>
  
  <p>I now understand how to get the site working, but I still wonder why the code for throwing the exception (which would have resulted in a more helpful log message) failed.
  What could be the reason?</p>