16:15:50 Create new PHPExcel object
16:15:50 Set document properties
16:15:50 Add some data
16:15:50 Add conditional formatting
16:15:50 Duplicate the conditional formatting across a range of cells
16:15:50 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/08conditionalformatting2.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/08conditionalformatting2.php(110): 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