Serve custom 404.html page for 404 error

[Adito5393]

Does your preview setup serve a custom 404 html page?

I'm new to Caddyfile format, but shouldn't you also have something like:

handle_errors {
	rewrite * /{err.status_code}.html
	file_server
}

For some reason this was not working with 2.6.4-alpine version and I downgraded to 2.6.3-alpine and it works, partially.
If the request is nested (e.g. localhost:port/some-path/somefile), then the CSS and js files are not found.

Do you think this is an issue with Caddy or Antora 404.html generated file?

EDIT: It looks like the issue was with the 404.html file. The file generated from the Default-UI preview src outputs:

<script id="site-script" src="_/js/site.js" data-ui-root-path="_"></script>
<script async src="_/js/vendor/highlight.js"></script>

And it should be absolute path: src="/_/js/site.js"