07:11:04 Create new PHPExcel object
07:11:04 Set document properties
07:11:04 Set default font
07:11:04 Add some data
07:11:04 Rename worksheet
07:11:04 Write to Excel2007 format

Fatal error: Uncaught exception 'PHPExcel_Writer_Exception' with message 'Could not close zip file /var/www/roundstone/vendor/phpoffice/phpexcel/Examples/02types.xlsx.' in /var/www/roundstone/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:399 Stack trace: #0 /var/www/roundstone/vendor/phpoffice/phpexcel/Examples/02types.php(153): PHPExcel_Writer_Excel2007->save('/var/www/rounds...') #1 {main} thrown in /var/www/roundstone/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php on line 399