Can anyone support me with this issue?

I am building a PWA base

Currently I am using project starter https://github.com/pwa-builder/pwa-starter to create a PWA site, but I need to add some libraries like https://github.com/scalable-software/web.component

I followed the instructions https://github.com/scalable-software/use.component to use it but it doesn’t seem to work.

An error occurred
TypeError: Failed to execute ‘appendChild’ on ‘Node’: parameter 1 is not of type ‘Node’.

Can anyone help me so that it can be integrated into the project base https://github.com/pwa-builder/pwa-starter like this?

Thanks!

I tried vite-plugin-static-copy to copy static files.
But it still errors static files eg: pin.template.html