Authentification Problem for all prefix

Need Help
1

Hello everyone

I installed the authentication plugin

this is my code

$service->setConfig([
             'unauthenticatedRedirect' => Router::url([
                     'plugin' => null,
                     'controller' => 'Users',
                     'action' => 'login',
                     'prefix' => 'Auth',
             ]),
             'queryParam' => 'redirect',
         ]);
$service->loadAuthenticator('Authentication.Form', [
            'fields' => $fields,
            'loginUrl' => Router::url([
                'prefix' => 'Auth',
                'plugin' => null,
                'controller' => 'Users',
                'action' => 'login'
            ]),
        ]);

if I call a url that starts with the Auth prefix it works fine but if I call a url that starts with another prefix I get this error

A route matching "array (
'controller' => 'Users',
'action' => 'login',
'prefix' => 'Forums',
'plugin' => NULL,
'_ext' => NULL,
)" could not be found.

thanks for help