Issue #3196456 by al_trottier: RuntimeException in LoginCallbackController

use Drupal\Core\Controller\ControllerBase;

use Drupal\Core\Entity\EntityTypeManagerInterface;

use Drupal\Core\Routing\TrustedRedirectResponse;

use Drupal\externalauth\ExternalAuth;

use Drupal\o365\AuthenticationService;

use Symfony\Component\DependencyInjection\ContainerInterface;

use Drupal\o365\GraphService;

use Symfony\Component\DependencyInjection\ContainerInterface;

use Symfony\Component\HttpFoundation\RedirectResponse;

/**

 * UserLoginController. Used when returned from the callback.

  /**

   * Login a user.

   *

   * @return \Drupal\Core\Routing\TrustedRedirectResponse

   * @return \Symfony\Component\HttpFoundation\RedirectResponse

   *   The redirect to the set URL in config.

   *

   * @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException

    }

    elseif ($account->isBlocked()) {

      $this->messenger()->addError(t('The requested account is blocked'));

      $response = new TrustedRedirectResponse('/user/login');

      return $response->send();

      return $this->redirect('user.login');

    }

    // Log the user in.

    $this->externalAuth->userLoginFinalize($account, $o365_id, 'o365_sso');

    // Return the redirect.

    $response = new TrustedRedirectResponse($redirectUrl);

    return $response->send();

    return new RedirectResponse($redirectUrl);

  }

}