웹브라우저 실행이 안됩니다 .인스톨도 안되구요. 최신버전으로 해서 진행하고 자 하는데 어떻게 하면 될가요?

웹브라우저 실행이 안됩니다 .

{
  "name": "chatbot-app",
  "version": "1.0.0",
  "description": "chatbot-app",
  "main": "index.js",
  "engines": {
    "node": ">=20.16.0",
    "npm": ">=10.2.0"
  },
  "scripts": {
    "start": "node index.js",
    "backend": "nodemon index.js",
    "frontend": "npm run front --prefix client",
    "dev": "concurrently \"npm run backend\" \"npm run start --prefix client\""
  },
  "author": "Jaewon Ahn",
  "license": "ISC",
  "dependencies": {
    "actions-on-google": "^2.6.0",
    "body-parser": "^1.18.3",
    "dialogflow": "^0.8.2",
    "dialogflow-fulfillment": "^0.6.1",
    "express": "^4.16.4",
    "mongoose": "^5.4.20"
  },
  "devDependencies": {
    "concurrently": "^4.1.0",
    "nodemon": "^1.18.10"
  }
}

const express = require('express');
const router = express.Router();
const structjson = require('./structjson.js');
const dialogflow = require('dialogflow');
const uuid = require('uuid');

const config = require('../config/keys');

const projectId = config.googleProjectID
const sessionId = config.dialogFlowSessionID
const languageCode = config.dialogFlowSessionLanguageCode


// Create a new session
const sessionClient = new dialogflow.SessionsClient();
const sessionPath = sessionClient.sessionPath(projectId, sessionId);

// We will make two routes 


// Text Query Route

router.post('/textQuery', async (req, res) => {
    //We need to send some information that comes from the client to Dialogflow API 
    // The text query request.
    const request = {
        session: sessionPath,
        queryInput: {
            text: {
                // The query to send to the dialogflow agent
                text: req.body.text,
                // The language used by the client (en-US)
                languageCode: languageCode,
            },
        },
    };

    // Send request and log result
    const responses = await sessionClient.detectIntent(request);
    console.log('Detected intent');
    const result = responses[0].queryResult;
    console.log(`  Query: ${result.queryText}`);
    console.log(`  Response: ${result.fulfillmentText}`);

    res.send(result)
})



//Event Query Route

router.post('/eventQuery', async (req, res) => {
    //We need to send some information that comes from the client to Dialogflow API 
    // The text query request.
    const request = {
        session: sessionPath,
        queryInput: {
            event: {
                // The query to send to the dialogflow agent
                name: req.body.event,
                // The language used by the client (en-US)
                languageCode: languageCode,
            },
        },
    };

    // Send request and log result
    const responses = await sessionClient.detectIntent(request);
    console.log('Detected intent');
    const result = responses[0].queryResult;
    console.log(`  Query: ${result.queryText}`);
    console.log(`  Response: ${result.fulfillmentText}`);

    res.send(result)
})







module.exports = router;