Markdoc Language Server is not working on Windows

What happened?

I expected the Markdoc language server to give me suggestions on tags when working with Astro. Instead I didn't get any information at all.

To reproduce

Here the link to the repo https://github.com/louiss0/markdoc-dummy-project

1. Open the repo.
2. Make sure the latest version of the markdoc language server is installed
3. Install the latest dependencies

Version

4.0

Additional context

I'm using the @astrojs/markdoc extension with astro.

Here's proof that markdoc isn't working with Astro.

.
├── src/
│   └── content
├── markdoc.config.json
└── markdoc.config.mjs