Application not visible in HTML5 repository using MTA and managed app router deploy

I was trying to build and deploy MTA application using Managed App Router also followed complete SAP developer tutorial . But when I deploy application and try to access it using given command cf html5-list -di <APPNAME>-destination-service -u. It gies the URL. But when I am opening the app in new tab it is giving me internal server error. It is also not showing in HTML5 repository.

I have the correct destination reference also in my XS-app.json and also I created the application using wizard. Any hint what is getting wrong? I am stuck since 2 days but not getting any help.

Below is the screenshot for reference.