16:15:24 Write to Excel2007 format<br />16:15:24 File written to 33chartcreate-bar-stacked.xlsx<br />16:15:24 Peak memory usage: 6 MB<br />16:15:24 Done writing file<br />File has been created in /var/www/html/examcontroller-web/vendor/phpoffice/phpexcel/Examples<br />