04:47:15 Create new PHPExcel object<br />04:47:15 Set document properties<br />04:47:15 Set default font<br />04:47:15 Add some data<br /><br />
<b>Notice</b>:  Trying to access array offset on value of type int in <b>/var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>82</b><br />
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<b>Notice</b>:  Trying to access array offset on value of type float in <b>/var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>82</b><br />
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<b>Notice</b>:  Trying to access array offset on value of type float in <b>/var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>82</b><br />
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<b>Notice</b>:  Trying to access array offset on value of type bool in <b>/var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>82</b><br />
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<b>Notice</b>:  Trying to access array offset on value of type bool in <b>/var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>82</b><br />
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<b>Notice</b>:  Trying to access array offset on value of type float in <b>/var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>82</b><br />
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<b>Notice</b>:  Trying to access array offset on value of type float in <b>/var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>82</b><br />
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<b>Notice</b>:  Trying to access array offset on value of type float in <b>/var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Cell/DefaultValueBinder.php</b> on line <b>82</b><br />
04:47:15 Rename worksheet<br />04:47:15 Write to Excel5 format<br /><br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function mb_strtolower() in /var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php:448
Stack trace:
#0 [internal function]: PHPExcel_Style_NumberFormat::setLowercaseCallback()
#1 /var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php(464): preg_replace_callback()
#2 /var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php(647): PHPExcel_Style_NumberFormat::formatAsDate()
#3 /var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php(738): PHPExcel_Style_NumberFormat::toFormattedString()
#4 /var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5/Worksheet.php(288): PHPExcel_Worksheet-&gt;calculateColumnWidths()
#5 /var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5.php(175): PHPExcel_Writer_Excel5_Worksheet-&gt;close()
#6 /var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Examples/02types-xls.ph in <b>/var/www/html/shiksha_web/vendor/phpoffice/phpexcel/Classes/PHPExcel/Style/NumberFormat.php</b> on line <b>448</b><br />