Nodejs alexa-sdk mengembalikan pesan kesalahan

Saya terus mendapatkan kesalahan berikut saat mengunggah zip saya ke Lambda.

{
  "errorMessage": "RequestId: 890bda68-7b8d-11e7-be27-9f13acbc6057 Process exited before completing request"
}

Saya menonton tutorial dan membuat kode sendiri yang menyebabkan kesalahan yang sama, jadi saya menyalin dan menempelkan kode dari video. Saya mencoba mengunggah dan membuat layanan Lambda untuk mencoba mengatasi hal ini. Dalam zip yang diunggah saya memiliki perpustakaan index.js, package.json dan mode.

Di bawah ini adalah kodenya:

'use strict';

//App Variables
var Alexa = require('alexa-sdk');
var APP_ID = ""; //We'll come back to this later
var SKILL_NAME = 'Mirror Mirror';

//List of compliments to be later given in a random order
var COMPLIMENT_LIST = [
    "Damn son, you're looking mighty fine today.",
    "Wow! You made an Alexa Skill. You're smarter than I thought!",
    "If you were a food, you'd be an endless supply of Cheesecake.",
    ];

//Setup
exports.handler = function(event, context, callback) {
    var alexa = Alexa.handler(event, context);
    alexa.APP_ID = APP_ID;
    alexa.registerHandlers(handlers);
    alexa.execute();
};

//Intent handlers that can be triggered.
var handlers = {
    'LaunchRequest': function () {
        this.emit('GetMirrorMirror');
    },
    /*
        When a user says a recognised phrase to Alexa the GetMirrorMirrorIntent is triggered
        This picks a random compliment from the array above and emits the :tellWithCard event.
        This event shows a card within the Amazon Echo app, and outputs the speech from speechOutput.
    */
    'GetMirrorMirrorIntent': function () {
        this.emit('GetMirrorMirror');
    },
    'GetMirrorMirror': function () {
        // Get a random compliment from the COMPLIMENTS_LIST array
        var complimentIndex = Math.floor(Math.random() * COMPLIMENT_LIST.length);
        var randomCompliment = COMPLIMENT_LIST[complimentIndex];

        // Output
        var speechOutput = "Your compliment: " +  randomCompliment;

        this.emit(':tellWithCard', speechOutput, SKILL_NAME, randomCompliment)
    },
    'AMAZON.HelpIntent': function () {
        var speechOutput = "You can say give me a compliment, or, you can say exit... What can I help you with?";
        var reprompt = "What can I help you with?";
        this.emit(':ask', speechOutput, reprompt);
    },
    'AMAZON.CancelIntent': function () {
        this.emit(':tell', 'Goodbye!');
    },
    'AMAZON.StopIntent': function () {
        this.emit(':tell', 'Goodbye!');
    }
};