Web process failed to bind to $PORT within 60 seconds of launch

When I deploy a Telegram bot built with this module to Heroku, after 60 seconds I get following error:

2016-09-20T11:50:11.599886+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web process failed to bind to $PORT within 60 seconds of launch
2016-09-20T11:50:11.599886+00:00 heroku[web.1]: Stopping process with SIGKILL
2016-09-20T11:50:11.705966+00:00 heroku[web.1]: Process exited with status 137

I couldn’t find a way to set a port because there is no .listen(...) method when calling the Telegram constructor. Any ideas?

[rmnblm]

I solved the problem by using a Procfile with the following content:

worker: node index.js

I did also run the following command

$ heroku scale web=0 worker=1

[vincentaudebert]

Watch out. This doesn’t work on a free dyno.