19:40:01 Write to Excel2007 format<br />19:40:01 File written to 33chartcreate-bar-stacked.xlsx<br />19:40:01 Peak memory usage: 6 MB<br />19:40:01 Done writing file<br />File has been created in /home/unidemmx/public_html/UNIDEM/vendor/phpoffice/phpexcel/Examples<br />