21:56:53 Create new PHPExcel object
21:56:53 Set document properties
21:56:53 Add some data
21:56:53 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/22heavilyformatted.xlsx.' in /var/www/comextweb/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:399 Stack trace: #0 /var/www/comextweb/vendor/phpoffice/phpexcel/Examples/22heavilyformatted.php(86): 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