Got the undermentioned when trying to authenticate at fedoraproject.org/w/index.php?title=Firefox_Hardware_acceleration&oldid=709238 the first time I tried: [1]
<html data-lt-installed="true"><head> <title>504 Gateway Timeout</title> </head><body data-new-gr-c-s-check-loaded="8.929.0" data-gr-ext-installed=""> <h1>Gateway Timeout</h1> <p>The gateway did not receive a timely response from the upstream server or application.</p>
It didn’t occur the second time, so gosh knows whether it’s useful to anyone.