Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Cell\DefaultValueBinder" not found in D:\xampp\htdocs\bkash-biller-portal-app\app\Exports\TransactionsExport.php:19 Stack trace: #0 {main} thrown in D:\xampp\htdocs\bkash-biller-portal-app\app\Exports\TransactionsExport.php on line 19