Fatal error: Uncaught Error: Class 'AC\Response\Json' not found in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\classes\QuickAdd\Controller\JsonResponse.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\classes\QuickAdd\Controller\JsonResponse.php on line 8