无法在 Heroku 上部署，我的未知错误消息

Question

Hi there; I have built a application on Node. Its operation is perfect, but when doing the deployment in Heroku it gives me this error

It tells me something about the path and favicon.ico, but I can't find a fault about that in particular. Please I need a little help. Thank you very much in advance

EDIT1: My Varibles; code and Heroku config

EDIT2

"scripts": {
        "desarrollo": "concurrently \"npm run dev \" \"npm run watch\" ",
        "dev": "nodemon ./index.js",
        "start": "node index.js",
        "watch": "webpack --w --mode development"
      }

I have also tried:

"start": "node ./index.js",

Maybe the error comes out there, I'm almost a novice in Heroku

Answer 1

Your web server has to listen on the port specified by the PORT environment variable, it can't just listen on any port it wants. Basically, in your code you want to listen on process.env.PORT .