21:59:24 Create new PHPExcel object
21:59:24 Set document properties
21:59:24 Add some data
21:59:24 Sum of Range #1 is 23
21:59:24 Sum of Range #2 is 33
21:59:24 Sum of both Ranges is 56
21:59:24 Minimum value in either Range is 3
21:59:24 Maximum value in either Range is 17
21:59:24 Average value of both Ranges is 9.3333333333333
21:59:24 Rename worksheet
21:59:24 Write to Excel2007 format
Fatal error: Uncaught Error: Class 'ZipArchive' not found in /var/www/html/planc/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:220
Stack trace:
#0 /var/www/html/planc/vendor/phpoffice/phpexcel/Examples/03formulas.php(119): PHPExcel_Writer_Excel2007->save('/var/www/html/p...')
#1 {main}
thrown in /var/www/html/planc/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php on line 220