My project Deployed successfully via github but showing 403 error – Forbidden You don’t have permission to access this resource

  github, heroku, laravel, php

hello guys am having trouble from running the website only. After successful deployment via my github repository ther was a message on that Your app was successfully deployed & then below a View link for the deployed website –
Guys pls suggest me what is required to do at this stage as I am fade up of trying…

This is my project on github repository –

Source: Ask PHP