13:54:47 Write to Excel2007 format<br />13:54:47 File written to 33chartcreate-bar-stacked.xlsx<br />13:54:47 Peak memory usage: 4 MB<br />13:54:47 Done writing file<br />File has been created in /var/www/html/examcontroller-web/vendor/phpoffice/phpexcel/Examples<br />