Dialogflow代理对以下Webhook代码没有响应

Question

下面用于index.js和package.json的代码旨在调用天气API，并创建一个与facebook Messenger链接的机器人，从而为您提供天气信息。对于其中包含实体天气的任何输入，我似乎都无法得到回应。请帮助

INDEX.JS

'use strict';

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

const host = 'api.worldweatheronline.com';
const wwoApiKey = 'API_KEY';

exports.dialogflowFirebaseFulfillment = functions.https.onRequest((req, res) => {
// Get the city and date from the request
let city = req.body.queryResult.parameters['geo-city']; // city is a required param

  // Get the date for the weather forecast (if present)
  let date = '';
  if (req.body.queryResult.parameters['date']) {
    date = req.body.queryResult.parameters['date'];
    console.log('Date: ' + date);
  }

  // Call the weather API
  callWeatherApi(city, date).then((output) => {
    res.json({ 'fulfillmentText': output }); // Return the results of the 
  weather API to Dialogflow
    }).catch(() => {
    res.json({ 'fulfillmentText': `I don't know the weather but I hope it's good!` });
  });
});

function callWeatherApi (city, date) {
  return new Promise((resolve, reject) => {
    // Create the path for the HTTP request to get the weather
    let path = '/premium/v1/weather.ashx?format=json&num_of_days=1' +
      '&q=' + encodeURIComponent(city) + '&key=' + wwoApiKey + '&date=' + date;
    console.log('API Request: ' + host + path);

    // Make the HTTP request to get the weather
    http.get({host: host, path: path}, (res) => {
      let body = ''; // var to store the response chunks
      res.on('data', (d) => { body += d; }); // store each response chunk
      res.on('end', () => {
        // After all the data has been received parse the JSON for desired data
        let response = JSON.parse(body);
        let forecast = response['data']['weather'][0];
        let location = response['data']['request'][0];
        let conditions = response['data']['current_condition'][0];
        let currentConditions = conditions['weatherDesc'][0]['value'];

        // Create response
        let output = `Current conditions in the ${location['type']} 
        ${location['query']} are ${currentConditions} with a projected high of
        ${forecast['maxtempC']}°C or ${forecast['maxtempF']}°F and a low of 
        ${forecast['mintempC']}°C or ${forecast['mintempF']}°F on 
        ${forecast['date']}.`;

        // Resolve the promise with the output text
        console.log(output);
        resolve(output);
  });
        res.on('error', (error) => {
        console.log(`Error calling the weather API: ${error}`)
        reject();
  });
});

}）； }

PACKAGE.JSON

{
  "name": "dialogflowFirebaseFulfillment",
  "description": "This is the default fulfillment for a Dialogflow agents using Cloud Functions for Firebase",
  "version": "0.0.1",
  "private": true,
  "license": "Apache Version 2.0",
  "author": "Google Inc.",
  "engines": {
    "node": "6.0"
  },
  "scripts": {
    "start": "firebase serve --only 
functions:dialogflowFirebaseFulfillment",
    "deploy": "firebase deploy --only 
functions:dialogflowFirebaseFulfillment"
  },
  "dependencies": {
    "actions-on-google": "^2.2.0",
    "firebase-admin": "^5.13.1",
    "firebase-functions": "^2.0.2",
    "dialogflow": "^0.6.0",
    "dialogflow-fulfillment": "0.5.0"
  }
}

该机器人没有响应。我知道该机器人可以正常运行，因为我安装的其他聊天和问候意图确实会产生响应。