Fatal error: Uncaught Error: Class "XMLWriter" not found in /home/elearnin/public_html/edhmn/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Shared/XMLWriter.php:7 Stack trace: #0 {main} thrown in /home/elearnin/public_html/edhmn/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Shared/XMLWriter.php on line 7