Call to a member function getInternalRequest() on null when using ResponseCode - selenium

Question

So im having this Problem and i can't find any solutions, anywhere.
I am trying to check: after the a URL redirect the ResponseCode is 200...which i is because i can see it in the Console.
How every when running this code
public function responseCodeWifi(\AcceptanceTester $I, REST $rest)
{
$I->wantTo('Check redirect for de/wifi-welcome');
$I->amOnPage('/de/wifi-welcome');
$I->seeInCurrentUrl('/wifi-welcome');
$rest->seeResponseCodeIs(200);
}
i get the following error in my Shell
[Error] Call to a member function getInternalRequest() on null
Im using chrome and selenium.
EDIT:
using
use AcceptanceTester;
use Codeception\Util\HttpCode;
use Codeception\Module\REST;

Answer 1

REST module can't inspect responses of WebDriver module.
If your Acceptance suite used PhpBrowser module, you could use REST module to inspect responses by making it dependent on PhpBrowser:
modules:
enabled:
- PhpBrowser
- REST:
depends: PhpBrowser
And call seeResponseCodeIs in you test code as
$I->seeResponseCodeIs(200);