Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Cell\DataType" not found in C:\laragon\www\bkkdemak\vendor\phpoffice\phpspreadsheet\tests\data\Calculation\TextData\CONCAT.php:28 Stack trace: #0 {main} thrown in C:\laragon\www\bkkdemak\vendor\phpoffice\phpspreadsheet\tests\data\Calculation\TextData\CONCAT.php on line 28