Error in Angular application after deployed on Heroku. Build is successful though

I’ve a small and simple angular project. It runs well on my local machine. I wanted to see how heroku works and deployed the same there. It gets successfully deployed but there is a message on the actual app link that says Application Error. Is it because of my app name being different from the repo name on github?

This is the repository that I’m trying to deploy on Heroku.

And the app is deployed here.

Source: AngularJS