12:47:42 Write to Excel2007 format<br />12:47:42 File written to 33chartcreate-bar-stacked.xlsx<br />12:47:42 Peak memory usage: 4 MB<br />12:47:42 Done writing file<br />File has been created in /home/hycmvsgn/heal.co.ke/invoices/vendor/phpoffice/phpexcel/Examples<br />