我的Alexa技能无法将数据写入DynamoDB吗？

Question

我目前正在学习如何开发Alexa技能，并希望创建一种简单的技能来询问用户的姓名，以及在获得姓名时-该姓名可以写入DynamoDB表中。下面的代码仅用于设置名称部分，并且我有一些代码尝试将其写入表中。不幸的是，当我运行该技能时，我只会看到“请求的技能的响应存在问题”的错误。

任何人都可以看到问题出在下面或什么可能导致了该问题吗？谢谢！

 function setNameInSession(intent, session, callback) {
        const cardTitle = intent.name;
        const nameSlot = intent.slots.Name;
        let repromptText = '';
        let sessionAttributes = {};
        const shouldEndSession = false;
        let speechOutput = '';

        if (nameSlot) {
            const name = nameSlot.value;
            sessionAttributes = createNameAttributes(name);
            speechOutput = `Great, thanks ${name}. You can ask me ` +
                "your favorite color by saying, what's my favorite color?";
            repromptText = "You can ask me your favorite color by saying, what's my favorite color?";

             // Load the AWS SDK for Node.js
    var AWS = require('aws-sdk');
    // Set the region 
    AWS.config.update({region: 'eu-west-1'});

    // Create the DynamoDB service object
    var ddb = new AWS.DynamoDB({apiVersion: '2012-10-08'});
    var params = {
      TableName: 'myTestTable',
      Item: {
        'timeStamp' : {S: 'Richard Roe'}
      }
    };
    ddb.putItem(params, function(err, data) {
      if (err) {
        console.log("Error", err);
      } else {
        console.log("Success", data);
      }
    });

        } else {
            speechOutput = "I'm not sure what your favorite color is. Please try again.";
            repromptText = "I'm not sure what your favorite color is. You can tell me your " +
                'favorite color by saying, my favorite color is red';
        }

        callback(sessionAttributes,
             buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
    }