15:03:40 Enable Cell Caching using MemoryGZip method
15:03:40 Create new PHPExcel object
15:03:40 Set properties
15:03:40 Add data
15:03:40 Hide 'Phone' and 'fax' columns
15:03:40 Set outline levels
15:03:40 Freeze panes
15:03:40 Rows to repeat at top
15:03:43 Write to Excel2007 format

Fatal error: Uncaught exception 'PHPExcel_Writer_Exception' with message 'Could not close zip file /var/www/phsdsbc/vendor/phpoffice/phpexcel/Examples/06largescale-with-cellcaching.xlsx.' in /var/www/phsdsbc/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:399 Stack trace: #0 /var/www/phsdsbc/vendor/phpoffice/phpexcel/Examples/06largescale-with-cellcaching.php(113): PHPExcel_Writer_Excel2007->save('/var/www/phsdsb...') #1 {main} thrown in /var/www/phsdsbc/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php on line 399