Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\DefinedName" not found in D:\NTG_App\www\store_management_system\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\NamedRange.php:8 Stack trace: #0 {main} thrown in D:\NTG_App\www\store_management_system\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\NamedRange.php on line 8