myth-auth How not to load the default routes

yes you need it

$routes->group('', ['namespace' => 'Myth\Auth\Controllers'], function ($routes) {
}

If I use namespace my controllers is not found

PHP Code:

$routes->group('/', ['namespace' => 'Myth\Auth\Controllers'], function($routes){
 $routes->get('', 'CDR\Dashboard::index');
 $routes->group('users', function($routes){
 $routes->get('add', 'CDR\Users::add');
 $routes->post('add', 'CDR\Users::store');
 });
}); 


404 Not Found
Controller or its method was not found: \Myth\Auth\Controllers\CDR\ Dashboard :: index

is there any way to do it?