21:49:10 Write to Excel2007 format<br />21:49:10 File written to 33chartcreate-column-2.xlsx<br />21:49:10 Peak memory usage: 6 MB<br />21:49:10 Done writing file<br />File has been created in /var/www/laravel-wms/vendor/phpoffice/phpexcel/Examples<br />