18:19:26 Write to Excel2007 format<br />18:19:26 File written to 33chartcreate-bar-stacked.xlsx<br />18:19:26 Peak memory usage: 1.75 MB<br />18:19:26 Done writing file<br />File has been created in /var/www/polr/vendor/phpoffice/phpexcel/Examples<br />