Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Reader\Xls" not found in D:\xampp\htdocs\SSWPOS\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Reader\Xls\DataValidationHelper.php:10 Stack trace: #0 {main} thrown in D:\xampp\htdocs\SSWPOS\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Reader\Xls\DataValidationHelper.php on line 10