https://update.k3s.io/v1-release/channels is not loaded in browser due to missing js/css

I'm not sure if this is correct repo for this report, but others doesn't seem better, including https://github.com/k3s-io/k3s-io.github.io

Describe the bug: Opening https://update.k3s.io/v1-release/channels in browsers produces empty page.

Steps To Reproduce: Open https://update.k3s.io/v1-release/channels in browser

Expected behavior: Page with all releases is loaded (as was some time before)

Actual behavior: Blank page

Additional context / logs: Browser network tab just shows 404 for https://update.k3s.io/api-ui/1.1.11/ui.min.js and https://update.k3s.io/api-ui/1.1.11/ui.min.css. curl agrees with that. curl loads https://update.k3s.io/v1-release/channels with plain json just fine