18:31:30 Enable Cell Caching using MemoryGZip method
18:31:30 Create new PHPExcel object
18:31:30 Set properties
18:31:30 Add data
18:31:30 Hide 'Phone' and 'fax' columns
18:31:30 Set outline levels
18:31:30 Freeze panes
18:31:30 Rows to repeat at top
18:31:31 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/06largescale-with-cellcaching.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/06largescale-with-cellcaching.php(113): 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