is there anyone good with HTMX?

So lately I have been trying to play with HTMX, for a fact I come across https://github.com/michalsn/codeigniter-htmx and I have tried their demo version as well.
on this demo on hx-boost they are returning whole page along with header and footer, and it's still getting rendered perfectly, but in my case it's showing a blank page only.

any help would be greatly appreciated.

I am on urge of giving up on HTMX because of this.

@michalsn

Learning Codeigniter