08:50:22 Load Excel2007 template file<br />08:50:22 Write to Excel5 format<br /><br />
<b>Fatal error</b>:  Uncaught exception 'PHPExcel_Writer_Exception' with message 'Could not close zip file /data/web/konferencjalilly.pl/vendor/phpoffice/phpexcel/Examples/26utf8.xlsx.' in /data/web/konferencjalilly.pl/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php:399
Stack trace:
#0 /data/web/konferencjalilly.pl/vendor/phpoffice/phpexcel/Examples/26utf8.php(62): PHPExcel_Writer_Excel2007-&gt;save('/data/web/konfe...')
#1 {main}
  thrown in <b>/data/web/konferencjalilly.pl/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel2007.php</b> on line <b>399</b><br />