Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Style\NumberFormat\BaseFormatter" not found in D:\xampp\htdocs\vendor\phpoffice\phpspreadsheet\Style\NumberFormat\Formatter.php:12 Stack trace: #0 {main} thrown in D:\xampp\htdocs\vendor\phpoffice\phpspreadsheet\Style\NumberFormat\Formatter.php on line 12