It is uploaded on heroku app and heroku gives one dyno(Instance) as it is my free account. So if my app crashes then it will take 5-10 minutes to work again. So

It is uploaded on heroku app and heroku gives one dyno(Instance) as it is my free account. So if my app crashes then it will take 5-10 minutes to work again. So wait for sometime it will be fixed automatically. If you want you can download npm package and test it. Link for the same is mentioned on my blog.