I’m using evolution and just tested it with http/https and always get a “Internal Server Error” but no more details when I refresh. So I can confirm!
When using curl I get:
<title>Oops - Error 500</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<p>The software powering this discussion forum encountered an unexpected problem. We apologize for the inconvenience.</p>
<p>Detailed information about the error was logged, and an automatic notification generated. We'll take a look at it.</p>
<p>No further action is necessary. However, if the error condition persists, you can provide additional detail, including steps to reproduce the error, by posting a discussion topic in the site's feedback category.</p>
So there should be some logging in Discourse about what is failing!