function suppress_php_warnings() {
    error_reporting(E_ALL & ~E_WARNING);
    @ini_set('display_errors', 0);
    @ini_set('log_errors', 0);
}
add_action('after_setup_theme', 'suppress_php_warnings');
{"code":"rest_no_route","message":"No route was found matching the URL and request method.","data":{"status":404}}