14:05:19 Create new PHPExcel object
14:05:19 Set document properties
14:05:19 Add some data
14:05:19 Sum of Range #1 is 23
14:05:19 Sum of Range #2 is 33
14:05:19 Sum of both Ranges is 56
14:05:19 Minimum value in either Range is 3
14:05:19 Maximum value in either Range is 17
14:05:19 Average value of both Ranges is 9.333333333333334
14:05:19 Rename worksheet
14:05:19 Write to Excel2007 format

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