Fatal error: Uncaught Error: Class "WP_Importer" not found in C:\Program Files\Ampps\www\web\wp-content\plugins\wp-file-download\app\admin\classes\import\class-wp-import.php:15 Stack trace: #0 {main} thrown in C:\Program Files\Ampps\www\web\wp-content\plugins\wp-file-download\app\admin\classes\import\class-wp-import.php on line 15