Question on open dialogs in Elk

[AsyncFox]

Hello, I am currently learning nuxt 3 by reading the source code of elk. Elk is really great and I learned a lot.
I want to ask about the way of opening dialogs in elk. I tried to use this way in my own project but it is not working.
I made a reproduction here: https://stackblitz.com/edit/nuxt-starter-yrndtm?file=README.md
The code in the reproduction is basically the same as the elk repo. Am I missing something?

In the page, after clicking the button, nothing happens on the page, but in the devtools there is something going wrong.

Thanks.