Ваня Самойлов

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
use Symfony\Component\Security\Core\Exception\AccessDeniedException;


private function closeCurrentSession(TokenStorageInterface $tokenStorage, Request $request)
{
        $token = new AnonymousToken('default', 'anon.');
        $tokenStorage->setToken($token);
        $request->getSession()->invalidate();
        throw new AccessDeniedException();
}