application error?

Question

Heroku

Hello, I’ve been uploading a simple VK bot to node js on heroku several times already, constantly getting an Application error.

Removed everything from the code, what remains:

const VkBot = require('node-vk-bot-api');
const Markup = require('node-vk-bot-api/lib/markup')

const bot = new VkBot(token);

bot.startpolling();

Procfile

web: node index.js

In logs

2020-04-23T13:15:29.147123+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=vkbotsupport.herokuapp.com request_id=f2e0e3e1-3c45-419a-92ef-f0406e277bd5 fwd="94.242.62.70" dyno= connect= service= status=503 bytes= protocol=https

Can you please tell me what could be the problem?