10:31:38 Create new PHPExcel object
10:31:38 Set document properties
10:31:38 Add some data
10:31:38 Rename worksheet
10:31:38 Set cell protection
10:31:38 Set sheet security
10:31:38 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/12cellProtection.xlsx.' in /var/www/roundstone/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:399 Stack trace: #0 /var/www/roundstone/vendor/phpoffice/phpexcel/Examples/12cellProtection.php(92): 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