determineErrorRedirect example

        else {
          // Invalid one-time link specifies an unknown user.           $this->messenger()->addError($this->t('The one-time login link you clicked is invalid.'));
        }
        return $this->redirect('<front>');
      }
    }

    /** @var \Drupal\user\UserInterface $reset_link_user */
    $reset_link_user = $this->userStorage->load($uid);
    if ($redirect = $this->determineErrorRedirect($reset_link_user, $timestamp, $hash)) {
      return $redirect;
    }

    $session = $request->getSession();
    $session->set('pass_reset_hash', $hash);
    $session->set('pass_reset_timeout', $timestamp);
    return $this->redirect(
      'user.reset.form',
      ['uid' => $uid]
    );
  }