Why do I obtain this error when deploying app to Heroku?

Question

I am getting some kind of error when deploying my app to heroku using git hub. The problem is, I don\'t understand the heroku logs and the entailing errors. Here is the hero

Answer 1

In my case, changing this:

"scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
    },

to this:

"scripts": {
   "start": "node app.js"
    },

was the solution