This is the page that will be displayed when you visit fhchaos, Felix' and Hans' little server. Sometimes people end up there by accident, because they mistyped a URL and the server is configured to respond to every subdomain that is not explicitly configured, e.g. https://notconfigured.diskurswelt.de/.
If you happen to need a similar page on your server, feel free to use this little webpage of ours and modify it to your needs. It is published under MIT license (see MITLICENSE).