Issue #3212743 by gresko8, hanoii: Code to set stripe element on stripe...

    // Replace tokens.

    $data = $this->tokenManager->replace($this->configuration, $webform_submission);

    $webform = $webform_submission->getWebform();

    $element = $webform->getElement($data['stripe_element']);

    $element_manager = \Drupal::service('plugin.manager.webform.element');

    $element_plugin = $element_manager->getElementInstance($element, $webform_submission);

    $element_plugin->prepare($element, $webform_submission);

    try {

      $stripe = new \Stripe\StripeClient($apikeySecret);