08:23:29 Read Slk format from /var/www/html/testcheckoutcardnet/vendor/phpoffice/phpspreadsheet/samples/Basic/../templates/SylkTest.slk in 0.0178 seconds 08:23:29 Write Xlsx format to /tmp/phpspreadsheet/20_Read_Sylk.xlsx in 0.0084 seconds 08:23:29 Write Xls format to /tmp/phpspreadsheet/20_Read_Sylk.xls in 0.0160 seconds 08:23:29 Peak memory usage: 8MB