亚马逊Alexa的技能购买追加销售无效

Question

我正在实现isp，我发现我的加售消息在日志中不起作用，它显示了未定义的加售消息。 这是我尝试过的一段代码：

    const HintIntentHandler = {
     canHandle(handlerInput) {
    return handlerInput.requestEnvelope.request.type === 'IntentRequest'
      && handlerInput.requestEnvelope.request.intent.name === 'HintIntent';
    },
    handle(handlerInput) {
    const locale = handlerInput.requestEnvelope.request.locale;
    const ms = handlerInput.serviceClientFactory.getMonetizationServiceClient();

    // Determine if the customer has purchased the hint_pack
    return ms.getInSkillProducts(locale).then(function(res) {
      var product = res.inSkillProducts.filter(record => record.referenceName === 'hint_pack');
 if (isEntitled(product)) {
        return handlerInput.responseBuilder
          .speak(speechText)
          .reprompt(sessionAttributes.currentRiddle.question)
          .withSimpleCard('Level Up Riddles', speechText)
          .getResponse();
      } else {
        const upsellMessage = "You don't currently own the hint pack. Want to learn more about it?";

        return handlerInput.responseBuilder
          .addDirective({
            'type': 'Connections.SendRequest',
            'name': 'Upsell',
            'payload': {
              'InSkillProduct': {
                'productId': product[0].productId
              },
              'upsellMessage': upsellMessage
            },
            'token': 'correlationToken'
          })
          .getResponse();
      }
    });
  }
}; 

，并且我将自动委派用于其他目的。 这是错误

    "name": "Upsell",
    "payload": {
        "purchaseResult": "ERROR",
        "productId": "amzn1.adg.product.214ce17e-f466-4b08-9afa-215954c297ac",
        "message": "Upsell was not presented."
    },
    "token": "correlationToken"