Can't get this to work!

I am new to hosting configurable apps from my own web server, so help is appreciated. I downloaded this app to my web server.

I have gone in to the application.json file and adjusted the group id that I want to show in the gallery. This is a group that is public on ArcGIS Online. However, I am not able to get this to work.

I know the readme file lists those items that can be adjusted but which items are absolutely necessary to adjust to get this to work?

Also, to access this it mentions to serve the contents of the /dist/ directory from my web server. Does that mean the link would look something like this https:///FilterGallery/dist/index.html ?

Start with the README and the application.json configuration described in the issue, then verify how the /dist/ directory is meant to be served. Document which settings are required for a public ArcGIS Online group and clarify the expected URL format, including whether /dist/index.html is correct.】【。

Written by the indexing model from the issue text.