Host telegram bot on heroku error

[passa9]

Hi all!
I have host an example of this library on heroku but when deploy after a few minutes I get this error on log:

Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch

this is my code:
index.js:

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

// replace the value below with the Telegram token you receive from @BotFather
const token = 'xxxxxxxxxxxxxxxxxxxxxxx';

var bot= new TelegramBot(token,{polling: true}); 

// Matches "/echo [whatever]"
bot.onText(/\/echo (.+)/, (msg, match) => {
    // 'msg' is the received Message from Telegram
    // 'match' is the result of executing the regexp above on the text content
    // of the message

    const chatId = msg.chat.id;
    const resp = match[1]; // the captured "whatever"

    // send back the matched "whatever" to the chat
    bot.sendMessage(chatId, resp);
});

// Listen for any kind of message. There are different kinds of
// messages.
bot.on('message', (msg) => {
    const chatId = msg.chat.id;

    // send a message to the chat acknowledging receipt of their message
    bot.sendMessage(chatId, 'Received your message');
});

package.json:

{
  "name": "bot-telegram",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "node index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "node-telegram-bot-api": "^0.30.0",
  }
}

How can I change the port?
Thanks in advance!

[ArraisLF]

Having the exact same issue, let me know if you find a workaround

[maheshsompalli]

Please try webhook like this:
webhook: {
url: process.env.APP_URL || 'your app url from heroku',
port: process.env.PORT || 5000
}

like :
webhook: {
url: process.env.APP_URL || 'https://*****.herokuapp.com',
port: process.env.PORT || 5000
}

[dverma]

Heroku requires you to use the env variable port, like so:

const Telegram = require('telegram-node-bot');
const tg = new Telegram.Telegram(BOT_API_TOKEN,{
webAdmin: {
port: process.env.PORT
}
});