Fatal error: Uncaught Error: Class "WP_REST_Controller" not found in D:\htdocs\www.nsecsoft.com\wp-includes\rest-api\endpoints\class-wp-rest-sidebars-controller.php:19 Stack trace: #0 {main} thrown in D:\htdocs\www.nsecsoft.com\wp-includes\rest-api\endpoints\class-wp-rest-sidebars-controller.php on line 19