23:20:06 Create new PHPExcel object
23:20:06 Set properties
23:20:06 Generate an image
23:20:06 Add a drawing to the worksheet
23:20:06 Write to Excel2007 format
<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;ZipArchive&quot; not found in /var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Writer/Excel2007.php:225
Stack trace:
#0 /var/www/sigicov_sign/shared/PHPExcel/Tests/25inmemoryimage.php(70): PHPExcel_Writer_Excel2007-&gt;save()
#1 {main}
  thrown in <b>/var/www/sigicov_sign/shared/PHPExcel/Classes/PHPExcel/Writer/Excel2007.php</b> on line <b>225</b><br />