Fatal error: Uncaught Error: Class "WP_REST_Meta_Fields" not found in C:\xampp\htdocs\wp-includes\rest-api\fields\class-wp-rest-user-meta-fields.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-includes\rest-api\fields\class-wp-rest-user-meta-fields.php on line 17