16:26:15 Write to Excel2007 format<br />16:26:15 File written to 33chartcreate-bar-stacked.xlsx<br />16:26:15 Peak memory usage: 1.75 MB<br />16:26:15 Done writing file<br />File has been created in /var/www/nsst/vendor/phpoffice/phpexcel/Examples<br />