Ошибка Недопустимый или неизвестный тип запроса (не запрос Dialogflow v1 или v2 webhook)

Question

Я пытался настроить локальное тестовое окружение для моих функций Dialogflow Firebase для локального тестирования, и у меня возникли некоторые проблемы. Я запускаю скрипт npm start, который запускает:

"scripts": {
    "start": "firebase serve --only functions:dialogflowFirebaseFulfillment",
    "deploy": "firebase deploy --only functions:dialogflowFirebaseFulfillment"
},

Я запускаю Почтальон и нажимаю на ссылку localhost, которую мне дали в терминале: POST http://localhost:5000/visa-requirements/us-central1/dialogflowFirebaseFulfillment с полезной нагрузкой в ​​виде:

{
  "responseId": "2f9811cd-7b7f-4bc9-9b79-b17d1fda8552-b4ef8d5f",
  "queryResult": {
    "queryText": "india",
    "action": "searchVisas",
    "parameters": {
      "passport-country": [
        "Australia"
      ],
      "visa-country": [
        "India"
      ]
    },
    "allRequiredParamsPresent": true,
    "outputContexts": [
      {
        "name": "projects/visa-requirements/agent/sessions/56afbb1a-dd84-ca0a-b3b8-249915ddc144/contexts/__system_counters__",
        "parameters": {
          "no-input": 0,
          "no-match": 0,
          "passport-country": [
            "Australia"
          ],
          "passport-country.original": [
            "australian"
          ],
          "visa-country": [
            "India"
          ],
          "visa-country.original": [
            "india"
          ]
        }
      }
    ],
    "intent": {
      "name": "projects/visa-requirements/agent/intents/adedfeb3-c729-4aed-8525-3fea7ee344c9",
      "displayName": "Visa Search Request",
      "endInteraction": true
    },
    "intentDetectionConfidence": 1,
    "languageCode": "en"
  },
  "originalDetectIntentRequest": {
    "payload": {}
  },
  "session": "projects/visa-requirements/agent/sessions/56afbb1a-dd84-ca0a-b3b8-249915ddc144"
}

Мой код:

// See https://github.com/dialogflow/dialogflow-fulfillment-nodejs
// for Dialogflow fulfillment library docs, samples, and to report issues
'use strict';

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

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

const serviceAccount = require("./config/sdjfkhjkghfjkdhgjkfhd.json");

process.env.DEBUG = 'dialogflow:*';

admin.initializeApp({
    credential: admin.credential.cert(serviceAccount),
    databaseURL: "https://jfhjkfdhfjjfhkfdjg.firebaseio.com"
});

const db = admin.firestore();

exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
  const agent = new WebhookClient({ request, response });

  function findVisa(agent) {

    const requirements = db.collection('requirements').doc('india').get();

    requirements.then(doc => {
      let data = doc.data();

      agent.add('Here are the visas for ' + data.name);
    })
  }

  function fallback(agent) {
    agent.add(`I didn't understand`);
    agent.add(`I'm sorry, can you try again?`);
  }

  // Run the proper function handler based on the matched Dialogflow intent name
  let intentMap = new Map();
    intentMap.set('Visa Search Request', findVisa);
    intentMap.set('Default Fallback Intent', fallback);
  // intentMap.set('your intent name here', googleAssistantHandler);
  agent.handleRequest(intentMap);
});

Из этого я получаю эту ошибку в Почтальоне:

Error: Invalid or unknown request type (not a Dialogflow v1 or v2 webhook request).
at new WebhookClient
(/Users/corymayfield/Sites/visaRequirementsFulfillment/firebase/functions/node_modules/dialogflow-fulfillment/src/dialogflow-fulfillment.js:232:13)
at /Users/corymayfield/Sites/visaRequirementsFulfillment/firebase/functions/index.js:23:17
at /usr/local/lib/node_modules/firebase-tools/lib/emulator/functionsEmulatorRuntime.js:621:20
at /usr/local/lib/node_modules/firebase-tools/lib/emulator/functionsEmulatorRuntime.js:596:19
at Generator.next (<anonymous>)
    at /usr/local/lib/node_modules/firebase-tools/lib/emulator/functionsEmulatorRuntime.js:7:71
    at new Promise (<anonymous>)
        at __awaiter (/usr/local/lib/node_modules/firebase-tools/lib/emulator/functionsEmulatorRuntime.js:3:12)
        at runFunction (/usr/local/lib/node_modules/firebase-tools/lib/emulator/functionsEmulatorRuntime.js:593:12)
        at /usr/local/lib/node_modules/firebase-tools/lib/emulator/functionsEmulatorRuntime.js:620:15