08:53:41 Write to Excel2007 format<br />08:53:41 File written to 33chartcreate-bar-stacked.xlsx<br />08:53:41 Peak memory usage: 6 MB<br />08:53:41 Done writing file<br />File has been created in /var/www/html/Luca/vendor/phpoffice/phpexcel/Examples<br />