14:01:44 Write to Excel2007 format<br />14:01:44 File written to 33chartcreate-bar-stacked.xlsx<br />14:01:44 Peak memory usage: 6.5 MB<br />14:01:44 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />