21:01:52 Create new PHPExcel object
21:01:52 Set document properties
21:01:52 Add some data
21:01:52 Sum of Range #1 is 23
21:01:52 Sum of Range #2 is 33
21:01:52 Sum of both Ranges is 56
21:01:52 Minimum value in either Range is 3
21:01:52 Maximum value in either Range is 17
21:01:52 Average value of both Ranges is 9.333333333333334
21:01:52 Rename worksheet
21:01:52 Write to Excel2007 format

Fatal error: Uncaught exception 'PHPExcel_Writer_Exception' with message 'Could not close zip file /var/www/deploy/2017-10-31_15:08:30/vendor/phpoffice/phpexcel/Examples/03formulas.xlsx.' in /var/www/deploy/2017-10-31_15:08:30/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:399 Stack trace: #0 /var/www/deploy/2017-10-31_15:08:30/vendor/phpoffice/phpexcel/Examples/03formulas.php(119): PHPExcel_Writer_Excel2007->save('/var/www/deploy...') #1 {main} thrown in /var/www/deploy/2017-10-31_15:08:30/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php on line 399