16:12:23 Write to Excel2007 format<br />16:12:23 File written to 33chartcreate-bar-stacked.xlsx<br />16:12:23 Peak memory usage: 5.5 MB<br />16:12:23 Done writing file<br />File has been created in /home/rrhhutem/public_html/let-4f/vendor/phpoffice/phpexcel/Examples<br />