14:51:55 Create new PHPExcel object
14:51:55 Set document properties
14:51:55 Add some data
14:51:55 Sum of Range #1 is 23
14:51:55 Sum of Range #2 is 33
14:51:55 Sum of both Ranges is 56
14:51:55 Minimum value in either Range is 3
14:51:55 Maximum value in either Range is 17
14:51:55 Average value of both Ranges is 9.3333333333333
14:51:55 Rename worksheet
14:51:55 Write to Excel2007 format

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Fatal error: Uncaught PHPExcel_Writer_Exception: Could not close zip file /var/www/public_html/sites/descomplica/src/web/vendor/phpoffice/phpexcel/Examples/03formulas.xlsx. in /var/www/public_html/sites/descomplica/src/web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:389 Stack trace: #0 /var/www/public_html/sites/descomplica/src/web/vendor/phpoffice/phpexcel/Examples/03formulas.php(119): PHPExcel_Writer_Excel2007->save('/var/www/public...') #1 {main} thrown in /var/www/public_html/sites/descomplica/src/web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php on line 389