title: Fatal error: Uncaught exception 'Exception' in PHPExcel classes
body: <p>Can any one please let me know, why this following error has been thrown from PHPExcel classes</p>
  
  <pre><code>    Fatal error: Uncaught exception 'Exception' with message 'Could not close zip file
   /var/www/mydomain/myexcel.xlsx.' in /var/www/mydomain/Classes/PHPExcel/Writer
  /Excel2007.php:400 Stack trace: #0 /var/www/mydomain/myexcel.php(173):
   PHPExcel_Writer_Excel2007-&gt;save('/var/www/mydomain...') #1 {main} 
  thrown in /var/www/mydomain/Classes/PHPExcel/Writer/Excel2007.php on line 400
  </code></pre>