How to host Alexa Skill using Express API (Web Server) - alexa-skills-kit

Question

I've been stuck with hosting an alexa skill webserver on my localhost!
Everything's correct from the Intents I've made, the url works, and it does request the intent I ask it for, but Alexa constantly keeps saying "There was a problem with the requested skill's response"
const express = require("express");
const Alexa = require('ask-sdk-core');
const { ExpressAdapter } = require("ask-sdk-express-adapter");
const app = express();
const LaunchRequestHandler = {
canHandle(handlerInput) {
return handlerInput.requestEnvelope.request.type === 'LaunchRequest';
},
handle(handlerInput) {
const speechText = 'Hello World - Your skill has launched';
return handlerInput.responseBuilder
.speak(speechText)
.reprompt(speechText)
.withSimpleCard('Hello World', speechText)
.getResponse();
}
};
const builder = Alexa.SkillBuilders.custom();
builder.addRequestHandlers(
LaunchRequestHandler
);
const skill = builder.create();
const adapter = new ExpressAdapter(skill, false, false);
app.post('/', adapter.getRequestHandlers());
app.listen(443, null, () => {
console.log("App is now online!");
});
This is the json body it gives when it tries to send a post / first
{
"version": "1.0",
"session": {
"new": false,
"sessionId": "amzn1.echo-api.session.325e7e93-3033-4e26-ada6-45f7967971bf",
"application": {
"applicationId": "amzn1.ask.skill.c1ed78ba-9003-4904-9376-b9a05b3a4bcc"
},
"attributes": {},
"user": {
"userId": "amzn1.ask.account.AH7FLOU7DBFRWVIENTV7VT7EMQLPAGYMFU4YUTI6OSBCK6GOKXWNQ6BI3BPZPEMN2TQFXGZCO43KXB3HJNVJPBJILPEDLGIAMQK2DK3C42S5FBPCQSN6B46FMQDATFSCL42YCF25PR5CFPGHYUFIDIJHZAJRIGMZ5BGZMU7FNJB4I6KBVDF5N2WIXCIG6YMV2X4ZO3QETGA23HQ"
}
},
"context": {
"Viewports": [
{
"type": "APL",
"id": "main",
"shape": "RECTANGLE",
"dpi": 213,
"presentationType": "STANDARD",
"canRotate": false,
"configuration": {
"current": {
"mode": "HUB",
"video": {
"codecs": [
"H_264_42",
"H_264_41"
]
},
"size": {
"type": "DISCRETE",
"pixelWidth": 1280,
"pixelHeight": 800
}
}
}
}
],
"Viewport": {
"experiences": [
{
"arcMinuteWidth": 346,
"arcMinuteHeight": 216,
"canRotate": false,
"canResize": false
}
],
"mode": "HUB",
"shape": "RECTANGLE",
"pixelWidth": 1280,
"pixelHeight": 800,
"dpi": 213,
"currentPixelWidth": 1280,
"currentPixelHeight": 800,
"touch": [
"SINGLE"
],
"video": {
"codecs": [
"H_264_42",
"H_264_41"
]
}
},
"Extensions": {
"available": {
"aplext:backstack:10": {}
}
},
"System": {
"application": {
"applicationId": "amzn1.ask.skill.c1ed78ba-9003-4904-9376-b9a05b3a4bcc"
},
"user": {
"userId": "amzn1.ask.account.AH7FLOU7DBFRWVIENTV7VT7EMQLPAGYMFU4YUTI6OSBCK6GOKXWNQ6BI3BPZPEMN2TQFXGZCO43KXB3HJNVJPBJILPEDLGIAMQK2DK3C42S5FBPCQSN6B46FMQDATFSCL42YCF25PR5CFPGHYUFIDIJHZAJRIGMZ5BGZMU7FNJB4I6KBVDF5N2WIXCIG6YMV2X4ZO3QETGA23HQ"
},
"device": {
"deviceId": "amzn1.ask.device.AGZ65ZMWRSISWS4RB63ZEBKJDJPMICI5WU6SDYTU7CZKDFASRAAR7WNYRTVKYWRURCC77E2EIGXBBUTO3REKDGWMLJDN7ODAHKWJLJCTNHN3CU3LVXDMGRJJ3HIXMWRLVT6D5OFWNYXZ73J7Y6TCONRXYL2OTJHRQ7SUGQKEBBIPNVIYZ35WI",
"supportedInterfaces": {}
},
"apiEndpoint": "https://api.amazonalexa.com",
"apiAccessToken": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjEifQ.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.X2fY3XTWW8zRZtwE6km2AIaSnhaAfSLKYqzgwlZrui6OyCS03Lfh1dJWHg4sZxTZqWyssV7VFWErW-gTZFUdkagtbbknuZQ3qlVQlwpZPaKhKBYC9VBDfmnGtjjDDCAAUyvB8ZIInbuxsrZ6DwYtuj5sa5_wGSfc0s2THQqP9Azklgk5UobwMN0iWsrhDSXy4guB4KaEJscD8_OLr2ZnbvWqy3tAPv3zfEsb8OmnOC7FBMHHgN-aCIRubnZNu8YA2Xtf-usOn1wVAjaIwEdlfgrOCRfFpZc3l7tfHTfX9HfLerRFh_IWQWc61DVfQZhyH4yeH5fdKUVDMels4zXlKQ"
}
},
"request": {
"type": "SessionEndedRequest",
"requestId": "amzn1.echo-api.request.e6d2bca6-4680-4367-8bb1-104e038c35ba",
"timestamp": "2021-12-03T02:22:58Z",
"locale": "en-US",
"reason": "ERROR",
"error": {
"type": "INVALID_RESPONSE",
"message": "An exception occurred while dispatching the request to the skill."
}
}
}
And the 2nd json body post / request when it errors:
{
"version": "1.0",
"session": {
"new": false,
"sessionId": "amzn1.echo-api.session.325e7e93-3033-4e26-ada6-45f7967971bf",
"application": {
"applicationId": "amzn1.ask.skill.c1ed78ba-9003-4904-9376-b9a05b3a4bcc"
},
"attributes": {},
"user": {
"userId": "amzn1.ask.account.AH7FLOU7DBFRWVIENTV7VT7EMQLPAGYMFU4YUTI6OSBCK6GOKXWNQ6BI3BPZPEMN2TQFXGZCO43KXB3HJNVJPBJILPEDLGIAMQK2DK3C42S5FBPCQSN6B46FMQDATFSCL42YCF25PR5CFPGHYUFIDIJHZAJRIGMZ5BGZMU7FNJB4I6KBVDF5N2WIXCIG6YMV2X4ZO3QETGA23HQ"
}
},
"context": {
"Viewports": [
{
"type": "APL",
"id": "main",
"shape": "RECTANGLE",
"dpi": 213,
"presentationType": "STANDARD",
"canRotate": false,
"configuration": {
"current": {
"mode": "HUB",
"video": {
"codecs": [
"H_264_42",
"H_264_41"
]
},
"size": {
"type": "DISCRETE",
"pixelWidth": 1280,
"pixelHeight": 800
}
}
}
}
],
"Viewport": {
"experiences": [
{
"arcMinuteWidth": 346,
"arcMinuteHeight": 216,
"canRotate": false,
"canResize": false
}
],
"mode": "HUB",
"shape": "RECTANGLE",
"pixelWidth": 1280,
"pixelHeight": 800,
"dpi": 213,
"currentPixelWidth": 1280,
"currentPixelHeight": 800,
"touch": [
"SINGLE"
],
"video": {
"codecs": [
"H_264_42",
"H_264_41"
]
}
},
"Extensions": {
"available": {
"aplext:backstack:10": {}
}
},
"System": {
"application": {
"applicationId": "amzn1.ask.skill.c1ed78ba-9003-4904-9376-b9a05b3a4bcc"
},
"user": {
"userId": "amzn1.ask.account.AH7FLOU7DBFRWVIENTV7VT7EMQLPAGYMFU4YUTI6OSBCK6GOKXWNQ6BI3BPZPEMN2TQFXGZCO43KXB3HJNVJPBJILPEDLGIAMQK2DK3C42S5FBPCQSN6B46FMQDATFSCL42YCF25PR5CFPGHYUFIDIJHZAJRIGMZ5BGZMU7FNJB4I6KBVDF5N2WIXCIG6YMV2X4ZO3QETGA23HQ"
},
"device": {
"deviceId": "amzn1.ask.device.AGZ65ZMWRSISWS4RB63ZEBKJDJPMICI5WU6SDYTU7CZKDFASRAAR7WNYRTVKYWRURCC77E2EIGXBBUTO3REKDGWMLJDN7ODAHKWJLJCTNHN3CU3LVXDMGRJJ3HIXMWRLVT6D5OFWNYXZ73J7Y6TCONRXYL2OTJHRQ7SUGQKEBBIPNVIYZ35WI",
"supportedInterfaces": {}
},
"apiEndpoint": "https://api.amazonalexa.com",
"apiAccessToken": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjEifQ.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.X2fY3XTWW8zRZtwE6km2AIaSnhaAfSLKYqzgwlZrui6OyCS03Lfh1dJWHg4sZxTZqWyssV7VFWErW-gTZFUdkagtbbknuZQ3qlVQlwpZPaKhKBYC9VBDfmnGtjjDDCAAUyvB8ZIInbuxsrZ6DwYtuj5sa5_wGSfc0s2THQqP9Azklgk5UobwMN0iWsrhDSXy4guB4KaEJscD8_OLr2ZnbvWqy3tAPv3zfEsb8OmnOC7FBMHHgN-aCIRubnZNu8YA2Xtf-usOn1wVAjaIwEdlfgrOCRfFpZc3l7tfHTfX9HfLerRFh_IWQWc61DVfQZhyH4yeH5fdKUVDMels4zXlKQ"
}
},
"request": {
"type": "SessionEndedRequest",
"requestId": "amzn1.echo-api.request.e6d2bca6-4680-4367-8bb1-104e038c35ba",
"timestamp": "2021-12-03T02:22:58Z",
"locale": "en-US",
"reason": "ERROR",
"error": {
"type": "INVALID_RESPONSE",
"message": "An exception occurred while dispatching the request to the skill."
}
}
}
Here is my current code, hopefully someone can help me

Answer 1

After hours of researching and github searches, this is the github repo you need to look at if you are willing to host your skill locally using REST API
https://github.com/hanstxu/alexa_endpoint_js