02:59:28 Write to Excel2007 format<br />02:59:28 File written to 33chartcreate-bar-stacked.xlsx<br />02:59:28 Peak memory usage: 6.5 MB<br />02:59:28 Done writing file<br />File has been created in /var/www/yii2/vendor/phpoffice/phpexcel/Examples<br />