11:53:31 Create new PHPExcel object<br />11:53:31 Set document properties<br />11:53:31 Add some data<br />11:53:31 Sum of Range #1 is 23<br />11:53:31 Sum of Range #2 is 33<br />11:53:31 Sum of both Ranges is 56<br />11:53:31 Minimum value in either Range is 3<br />11:53:31 Maximum value in either Range is 17<br />11:53:31 Average value of both Ranges is 9.333333333333334<br />11:53:31 Rename worksheet<br />11:53:31 Write to Excel2007 format<br /><br />
<b>Fatal error</b>:  Uncaught exception 'PHPExcel_Writer_Exception' with message 'Could not close zip file /var/www/isafetrip.me/vendor/phpoffice/phpexcel/Examples/03formulas.xlsx.' in /var/www/isafetrip.me/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:399
Stack trace:
#0 /var/www/isafetrip.me/vendor/phpoffice/phpexcel/Examples/03formulas.php(119): PHPExcel_Writer_Excel2007-&gt;save('/var/www/isafet...')
#1 {main}
  thrown in <b>/var/www/isafetrip.me/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php</b> on line <b>399</b><br />