18:26:45 Write to Excel2007 format<br />18:26:45 File written to 33chartcreate-composite.xlsx<br />18:26:45 Peak memory usage: 2 MB<br />18:26:45 Done writing file<br />File has been created in /home/hycmvsgn/heal.co.ke/invoices/vendor/phpoffice/phpexcel/Examples<br />