10:02:13 Create new PHPExcel object
10:02:13 Set document properties
10:02:13 Add some data
10:02:13 Rename worksheet
10:02:13 Clone worksheet
10:02:13 Rename cloned worksheet
10:02:13 Write to Excel2007 format

Fatal error: Uncaught Error: Class 'ZipArchive' not found in /var/www/html/API/class/PHPExcel-1.8/Classes/PHPExcel/Writer/Excel2007.php:220 Stack trace: #0 /var/www/html/API/class/PHPExcel-1.8/Examples/38cloneWorksheet.php(103): PHPExcel_Writer_Excel2007->save() #1 {main} thrown in /var/www/html/API/class/PHPExcel-1.8/Classes/PHPExcel/Writer/Excel2007.php on line 220