此网址的域名未包含在应用的域中。 （子域！）

my question is the same as this:

Facebook App - The domain of this URL isn't included in the app's domains. Why?

except that my url is: http://ccc.nnn.hhh.hu

The settins on fb, "facebook login":

Client OAuth Login: ON

Web OAuth Login: ON

Valid OAuth Redirect URIs: http://ccc.nnn.hhh.hu/my.php

strict mode is ON (cannot be disabled)

At basic:

App Domains: http://ccc.nnn.hhh.hu

so, when trying to login, the facebook dialogs asks for the username and password, so far so good. And then I get an exception for this:

$fb = new Facebook\Facebook([
    'app_id' => aeaeae,
    'app_secret' => rrrrr,
    'default_graph_version' => 'v2.5'
]);

$helper = $fb->getRedirectLoginHelper();
$accessToken = $helper->getAccessToken();

and I wont get the $accessToken but the execption:

The domain of this URL isn't included in the app's domains.