Tukukkk

I have a problem testing my Skill on actions on google and in my mobile. It works fine with dialogflow but when I arrive to the Intent defined by the function questions_ready on the assistent of google or in the actions google web page to test it, I have the error "'final_response' must be set.". But it works on Dialogflow, so I dont know where it is the error. I leave here my code hoping some of you can help me! Thank you!

'use strict';



const functions = require('firebase-functions');

const admin = require('firebase-admin');

const {WebhookClient} = require('dialogflow-fulfillment');



process.env.DEBUG = 'dialogflow:*'; // enables lib debugging statements

admin.initializeApp(functions.config().firebase);

const db = admin.firestore();



// Variables

var procedure;

var procedure;

var finish = "Ok, thank you. We have finished the questions";

var status_questions = [

    {question: 'Ok, here is your first question. Please, could you tell me how do you feel on a scale from 1 to 10 ? Where 1 is very bad and 10 is very good'},

    {question: 'Your workload is very high, high, normal, low or very low?'},

    {question: 'Tell me what is your level of monotony on a scale from 1 to 10. Where 1 is very bad and 10 is very good'}];



var currentIndex = 0;

var currentQuestion = "";

var flag = 0;



var list_answers = ;

var list_index = ;

var list_timestamps = ;

var list_questions = ;

const dialogflowAgentRef = db.collection('dialogflow').doc();

//



exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {

  const agent = new WebhookClient({ request, response });



  function welcome(agent) {

    agent.add(`Welcome to my agent!`);

  }



  function fallback(agent) {

    agent.add(`I didn't understand`);

    agent.add(`I'm sorry, can you try again?`);

}



  function manual(agent) {

    const problem = agent.parameters.manual_problems;

    if (problem == "DDoS problem"){

        procedure = `Ok! Let's see how to solve your `+ problem + `. Specify here the procedure to resolve DDoS problem`;     

    }

    else {

        procedure = `Sorry, we don't have a manual to resolve that problem`;

    }



    agent.add((procedure));

  }



  function user_name(agent){

      const user = agent.parameters.names;

        return db.runTransaction(t => {

        t.set(dialogflowAgentRef, {name: user});

        return Promise.resolve('Write complete');

    }).then(doc => {

      agent.add(`Ok ${user}, are you ready?`);

    }).catch(err => {

      console.log(`Error writing to Firestore: ${err}`);

      agent.add(`Failed to write "${user}" to the Firestore database.`);

    });

  }



//WHEN IT IS CALLING THIS FUNCTION I GOT THE ERROR



  function questions_ready(agent) {

    if(currentIndex === 0){

        list_index=;

        list_answers=;

        list_questions=;

        list_timestamps=;

        list_index.push(currentIndex);

        currentQuestion = status_questions[currentIndex++].question;

    }

    else if(currentIndex >=1 && currentIndex <= 10){

        list_index.push(currentIndex);

        currentQuestion = status_questions[currentIndex++].question;

        flag = 1;

        const answParam = agent.parameters.answers;

        const ans = answParam;

        list_answers.push(ans);



    }

    else {

        currentIndex = 0;

        currentQuestion = finish;

        flag=0;

        const answParam = agent.parameters.answers;

        const ans = answParam;

        list_answers.push(ans);



        agent.add(currentQuestion);



        return db.runTransaction(t => {

        t.update(dialogflowAgentRef, {time: list_timestamps});

        t.update(dialogflowAgentRef, {index: list_index});

        t.update(dialogflowAgentRef, {question: list_questions});

        t.update(dialogflowAgentRef, {answer: list_answers});

        return Promise.resolve('Write complete');

    });

    }



    const ques = currentQuestion;

    list_questions.push(ques);



    var timestamp = Date.now();

    list_timestamps.push(timestamp);



    let ctx = {'name': 'projects/prueba-firebase-v1/agent/sessions/545ec712-8f69-6999-a50b-4127d38bce82/contexts/questions_ready', 'lifespan': 14, 

    'parameters': {'timestamp': list_timestamps, 'list_index': list_index, 'list_questions': list_questions, 'list_answers': list_answers}}; //, 'list_index': list_index

    agent.setContext(ctx);



    agent.add(currentQuestion);



  }



  // Run the proper function handler based on the matched Dialogflow intent name

  let intentMap = new Map();

  intentMap.set('Default Welcome Intent', welcome);

  intentMap.set('Default Fallback Intent', fallback);

  intentMap.set(enter code here'Manual', manual);

  intentMap.set('User_Name', user_name);

  intentMap.set('Questions_Ready', questions_ready);



  agent.handleRequest(intentMap);

}); 

The messages I obtain on Actions on Google are:

-On Simulator Display:
Prueba application isn't responding right now. Try again soon.

-Errors:
MalformedResponse
'final_response' must be set.

-Debug:

{

  "response": "Prueba application isn't responding right now. Try again soon.",

  "expectUserResponse": false,

  "conversationToken": "GidzaW11bG...",

  "audioResponse": "//NExAASWK...",

  "debugInfo": {

    "assistantToAgentDebug": {

      "curlCommand": "curl -v 'https://api.api.ai/api/integrations/google?token=6094e3dbd9e242679d0dcc603568b120&versionId=3' -H 'Content-Type: application/json;charset=UTF-8' -H 'Google-Actions-API-Version: 2' -H 'Authorization: eyJhbGciOiJSUzI1NiIsImtpZCI6ImQxZTg2OWU3YmY0MGRkYzNkM2RlMDgwNDI1OThiYTgzNTA5NzBmMGEiLCJ0eXAiOiJKV1QifQ.eyJpc3MiOiJodHRwczovL2FjY291bnRzLmdvb2dsZS5jb20iLCJhdWQiOiJjeWJlcm9wcy1maXJlYmFzZS12MSIsIm5iZiI6MTU0MjcxMTY5MCwiaWF0IjoxNTQyNzExOTkwLCJleHAiOjE1NDI3MTIxMTAsImp0aSI6Ijc5NWYyZTViZGRjNzk5ZDAxMTY2MDZhZmEyZjJiMDRlYjU3MDk4ZGQifQ.XNBl3DcL2Zhw9bXHvPG52U21ATIb52snsQ5YF9T57cf9HrEeau6XTPfbtALdkiTEqhRfcihQTwLu7wAMdvmqTeeDaRW3F8C2xDCitT2bjPryeDJ3eyoJvI2cTy5Vhf1oN3WwsHdlM0D59JYyNtTH1NE-B60bnLCPQNe7Mv23aUnipdo-LsAytF_d9Bpz93SR_WZITqP6-FpqHSSuUHL3qi8idqGNQrtFF6RQ5-AGKkLkqE-V_Sa2iLmpqDsi4fP3RYW0bajuSFrn74JvrziQKQR4ZaFc4ITjPtJlhboCTgJusOqpFvOYV_-LF5FqgswaiMqUtaX8YBW_EKLLMLoS2A'  -A 'Mozilla/5.0 (compatible; Google-Cloud-Functions/2.1; +http://www.google.com/bot.html)' -X POST -d '{"user":{"userId":"ABwppHFD2VxLtzrmnMXp4XsxyE13Xc7mxOhaf7cbxMUQg7OEe_I1qRVlcDck8Rl-bESCZBPi3cHvESEbHYfvecHr59o","locale":"en-US","lastSeen":"2018-11-20T10:51:47Z"},"conversation":{"conversationId":"ABwppHH7q6m-4okbTf3aKCU-dgpEAoOmeCLle2AZjocfLI6i8BS1Lhqcx4InD3QBKboVr4yyTPcaOhAOMgQsaHIgHRU","type":"ACTIVE","conversationToken":""},"inputs":[{"intent":"actions.intent.TEXT","rawInputs":[{"inputType":"KEYBOARD","query":"yes"}],"arguments":[{"name":"text","rawText":"yes","textValue":"yes"}]}],"surface":{"capabilities":[{"name":"actions.capability.AUDIO_OUTPUT"},{"name":"actions.capability.MEDIA_RESPONSE_AUDIO"},{"name":"actions.capability.WEB_BROWSER"},{"name":"actions.capability.SCREEN_OUTPUT"}]},"isInSandbox":true,"availableSurfaces":[{"capabilities":[{"name":"actions.capability.AUDIO_OUTPUT"},{"name":"actions.capability.WEB_BROWSER"},{"name":"actions.capability.SCREEN_OUTPUT"}]}],"requestType":"SIMULATOR"}'",

      "assistantToAgentJson": "{"user":{"userId":"ABwppHFD2VxLtzrmnMXp4XsxyE13Xc7mxOhaf7cbxMUQg7OEe_I1qRVlcDck8Rl-bESCZBPi3cHvESEbHYfvecHr59o","locale":"en-US","lastSeen":"2018-11-20T10:51:47Z"},"conversation":{"conversationId":"ABwppHH7q6m-4okbTf3aKCU-dgpEAoOmeCLle2AZjocfLI6i8BS1Lhqcx4InD3QBKboVr4yyTPcaOhAOMgQsaHIgHRU","type":"ACTIVE","conversationToken":""},"inputs":[{"intent":"actions.intent.TEXT","rawInputs":[{"inputType":"KEYBOARD","query":"yes"}],"arguments":[{"name":"text","rawText":"yes","textValue":"yes"}]}],"surface":{"capabilities":[{"name":"actions.capability.AUDIO_OUTPUT"},{"name":"actions.capability.MEDIA_RESPONSE_AUDIO"},{"name":"actions.capability.WEB_BROWSER"},{"name":"actions.capability.SCREEN_OUTPUT"}]},"isInSandbox":true,"availableSurfaces":[{"capabilities":[{"name":"actions.capability.AUDIO_OUTPUT"},{"name":"actions.capability.WEB_BROWSER"},{"name":"actions.capability.SCREEN_OUTPUT"}]}],"requestType":"SIMULATOR"}"

    },

    "agentToAssistantDebug": {

      "agentToAssistantJson": "{n  "responseMetadata": {n    "status": {n      "code": 10,n      "message": "Failed to parse Dialogflow response into AppResponse because of empty speech response",n      "details": [{n        "@type": "type.googleapis.com/google.protobuf.Value",n        "value": "{\"id\":\"95a80a4d-4a98-461f-b183-88a358d87ebc\",\"timestamp\":\"2018-11-20T11:06:30.765Z\",\"lang\":\"en-us\",\"result\":{},\"alternateResult\":{},\"status\":{\"code\":206,\"errorType\":\"partial_content\",\"errorDetails\":\"Webhook call failed. Error: Webhook response was empty.\"},\"sessionId\":\"ABwppHH7q6m-4okbTf3aKCU-dgpEAoOmeCLle2AZjocfLI6i8BS1Lhqcx4InD3QBKboVr4yyTPcaOhAOMgQsaHIgHRU\"}"n      }]n    }n  }n}"

    },

    "sharedDebugInfoList": [

      {

        "name": "ResponseValidation",

        "debugInfo": "",

        "subDebugEntryList": [

          {

            "name": "MalformedResponse",

            "debugInfo": "'final_response' must be set.",

            "subDebugEntryList": 

          }

        ]

      }

    ]

  },

  "visualResponse": {

    "visualElementsList": [

      {

        "displayText": {

          "content": "Prueba application isn't responding right now. Try again soon."

        }

      }

    ],

    "suggestionsList": ,

    "agentLogoUrl": ""

  },

  "clientError": 0,

  "is3pResponse": 1,

  "clientOperationList": 

}

Here there are the images I have on my Questions_Ready Intent and the Dialog established by Dialogflow where all work perfectly. The problem is when I try to test the skill on Actions on Google

Questions_Ready Intent (I)

Questions_Ready Intent (II)

Answers Entities

Dialogflow dialog (I)

Dialogflow dialog (II)

Result obtained on Actions on Google

On the Debug json:

debugInfo.agentToAssistantDebug.agentToAssistantJson: "Failed to parse Dialogflow response into AppResponse because of empty speech response"

We can see that Dialogflow is not returning any response that Actions on Google understands. Example response for AoG

So, my thoughts are that the webhook is not returning the correct format for Actions on Google, which is different from Dialogflow.

Here you have a repository for examples of the responses for Actions on Google: https://github.com/dialogflow/fulfillment-webhook-json/tree/master/responses/v2/ActionsOnGoogle/RichResponses

I'm sorry I can't help further with the node.js code, I implemented the webhooks in another language, but the json response is the same for all of them.