13:54:22 Write to Excel2007 format<br />13:54:22 File written to 33chartcreate-column.xlsx<br />13:54:22 Peak memory usage: 4 MB<br />13:54:22 Done writing file<br />File has been created in /var/www/html/examcontroller-web/vendor/phpoffice/phpexcel/Examples<br />