Error when Exporting Entries

[rsantos_mjfirm]

Hi,

We have been having issues exporting entries. Whenever we attempt to export entries, it gives us the following error message:

“There has been a critical error on this website. Please check your site admin email inbox for instructions.”

When I enable debug mode to be true in the wp-config.php, it gives the following error:

================
Fatal error: Uncaught Error: Call to undefined function PhpOffice\PhpSpreadsheet\Shared\mb_convert_encoding() in /home/matthewj/public_html/wp-content/plugins/quform/library/PhpSpreadsheet/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Shared/StringHelper.php:345 Stack trace: #0 /home/matthewj/public_html/wp-content/plugins/quform/library/PhpSpreadsheet/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Cell/DefaultValueBinder.php(25): PhpOffice\PhpSpreadsheet\Shared\StringHelper::sanitizeUTF8(‘Full Name’) #1 /home/matthewj/public_html/wp-content/plugins/quform/library/PhpSpreadsheet/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Cell/Cell.php(184): PhpOffice\PhpSpreadsheet\Cell\DefaultValueBinder->bindValue(Object(PhpOffice\PhpSpreadsheet\Cell\Cell), ‘Full Name’) #2 /home/matthewj/public_html/wp-content/plugins/quform/library/PhpSpreadsheet/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Worksheet.php(1142): PhpOffice\PhpSpreadsheet\Cell\Cell->setValue(‘Full Name’) #3 /home/matthewj/public_html/wp-co in /home/matthewj/public_html/wp-content/plugins/quform/library/PhpSpreadsheet/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Shared/StringHelper.php on line 345
==============

We are using:
QuForms version 2.14.2
WordPress 5.6.4

We’ve never had this issue in the past so I’m unsure how this happened all of a sudden.

[Ally]

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