Fatal error: Uncaught Error: Class 'AC\Form\Nonce' not found in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\classes\Nonce\PreviewNonce.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\admin-columns-pro\classes\Nonce\PreviewNonce.php on line 9