mysqli connection refused
Opening https://patchdemo.wmflabs.org/ gives
Warning: mysqli::__construct(): (HY000/2002): Connection refused in /var/www/html/includes.php on line 29
Connection refused
which also causes mysterious error messages on Gerrit, because the script doesn’t come to add the CORS headers.
I see #505 (closed) with the same error message, but since it’s a years-old issue, I figured it would make sense to create a new one.