00:40:12 Create new PHPExcel object
00:40:12 Set document properties
00:40:12 Add some data
00:40:12 Sum of Range #1 is 23
00:40:12 Sum of Range #2 is 33
00:40:12 Sum of both Ranges is 56
00:40:12 Minimum value in either Range is 3
00:40:12 Maximum value in either Range is 17
00:40:12 Average value of both Ranges is 9.333333333333334
00:40:12 Rename worksheet
00:40:12 Write to Excel2007 format

Fatal error: Uncaught exception 'PHPExcel_Writer_Exception' with message 'Could not close zip file /var/www/comextweb/vendor/phpoffice/phpexcel/Examples/03formulas.xlsx.' in /var/www/comextweb/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:399 Stack trace: #0 /var/www/comextweb/vendor/phpoffice/phpexcel/Examples/03formulas.php(119): PHPExcel_Writer_Excel2007->save('/var/www/comext...') #1 {main} thrown in /var/www/comextweb/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php on line 399