23:53:13 Create new PHPExcel object<br />23:53:13 Set document properties<br />23:53:13 Add some data<br />23:53:13 Sum of Range #1 is 23<br />23:53:13 Sum of Range #2 is 33<br />23:53:13 Sum of both Ranges is 56<br />23:53:13 Minimum value in either Range is 3<br />23:53:13 Maximum value in either Range is 17<br />23:53:13 Average value of both Ranges is 9.3333333333333<br />23:53:13 Rename worksheet<br />23:53:13 Write to Excel2007 format<br /><br />
<b>Fatal error</b>:  Uncaught exception 'PHPExcel_Writer_Exception' with message 'Could not close zip file /var/www/deploy/2017-10-31_15:08:30/igeotrack/vendor/phpoffice/phpexcel/Examples/03formulas.xlsx.' in /var/www/deploy/2017-10-31_15:08:30/igeotrack/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:389
Stack trace:
#0 /var/www/deploy/2017-10-31_15:08:30/igeotrack/vendor/phpoffice/phpexcel/Examples/03formulas.php(119): PHPExcel_Writer_Excel2007-&gt;save('/var/www/deploy...')
#1 {main}
  thrown in <b>/var/www/deploy/2017-10-31_15:08:30/igeotrack/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php</b> on line <b>389</b><br />