Map view is not loading on web page

I was working on . Graphhopper with GTFS . I followed all below steps properly :
As per Link : https://github.com/graphhopper/graphhopper/tree/master/reader-gtfs

Server Started application on {localhost:8989}

But when I am running url on browser , web page not displaying as expected . Some part of UI in web is missing . Find screenshot attached. Also I found error in console as Main.js not found
kindly check . Thanks in Advance.

You can fetch the main.js via command line following the instructions under “Try out”: https://github.com/graphhopper/graphhopper/blob/master/docs/core/quickstart-from-source.md or you can go to the “JavaScript” section and installing npm & build the main.js from sources.

If you are on master you should probably the more sophisticated PT UI (show here) that currently works without the npm toolchain (only maven). See https://github.com/graphhopper/graphhopper/pull/1760 and e.g. open reader-gtfs/src/main/resources/assets/pt/index.html