Programming Telegram Bota, why doesn't Node JS code work?

Question

Node.js

I'm a beginner, I'm taking the course "Telegram-bot Master", at the time of recording the code is working, but now I can't understand what's the matter that it's not working now, here's the code:

const TelegramBot = require('node-telegram-bot-api')

const TOKEN = 'ЗДЕСЬ МОЙ ТОКЕН'

const bot = new TelegramBot(TOKEN,{
    polling: {
        interval: 300,
        autoStart: true,
        params:{
            timeout: 10
        }
    }
})

bot.on('message', msg => {
    bot.sendMessage(msg.chat.id, 'I am alive!')
})