15:31:41 Load from Gnumeric file
Call time to read Workbook was 0.0970 seconds
15:31:41 Current memory usage: 4 MB
15:31:41 Write to Excel2007 format
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'ZipArchive' not found in /var/www/html/agregat/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:227
Stack trace:
#0 /var/www/html/agregat/vendor/phpoffice/phpexcel/Examples/GnumericReader.php(52): PHPExcel_Writer_Excel2007-&gt;save('/var/www/html/a...')
#1 {main}
  thrown in <b>/var/www/html/agregat/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php</b> on line <b>227</b><br />