I am unable to access GNOME GitLab

Instead, verbatim, I observe:

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
  <head>
    <title>503 error:0A000126:SSL routines::unexpected eof while reading</title>
  </head>
  <body>
    <h1>Error 503 error:0A000126:SSL routines::unexpected eof while reading</h1>
    <p>error:0A000126:SSL routines::unexpected eof while reading</p>
    <h3>Error 54113</h3>
    <p>Details: cache-lhr-egwu1540023-LHR 1781217812 74351341</p>
    <hr>
    <p>Varnish cache server</p>
  </body>
</html>

If it matters, I am attempting to access World/bustle/-/work_items/46.

To demonstrate this:

This resolved itself, PT4M afterward. If it recurs, I’ll file a work item.