Issue: XF 2.2 home page issue

In the absence of an error log, this is likely occurring because the page is rerouting too many times.

If this is a new test site, make sure that PHP is receiving the correct value in $_SERVER['HTTP_HOST'].
If it's receiving the wrong domain, then your test wiki will think it's actually the live wiki and will try to redirect away from it endlessly. Resolving this would require you to fix your server configuration.

Example test.php:
If there is no problem there, please open a ticket for this. I would need to probe the data manually to see what values are causing an endless loop.

Fixed in the next release. This occurs when $_SERVER['SCRIPT_NAME'] contains an incorrect value. XenForo was able to workaround this problem in src/XF/Http/Request.php:
However, XenForo's solution resulted in a function that VaultWiki expected to return a directory path, to return a file path instead. This lead to an infinite redirect due to not being the expected path.

Ideally, the server configuration should fill $_SERVER['SCRIPT_NAME'] correctly. An incorrect value here may still cause issues in other aspects of your software. If you look at your test.php which has been updated, you will see that it only prints your HTTP_HOST, when the result should be /test.php.

Is this something I can manually fix again if I do the real migration before 4.1.1?

Is there an underlying issue in server config I need to fix?

Appreciate your help on this!

On your test server, there is an underlying issue in the server config. I don't know if the same issue exists on your live server. Probably not, if you are already running any version of VaultWiki without problems.

On your test server, the PHP environment parameter SCRIPT_NAME is being set by your configuration to contain the current host name. But it should contain the path to the current script, relative to the document root for the current host name. So if your host's files are in /home/acct/host, and the current PHP file is /home/acct/host/path/test.php, then SCRIPT_NAME should be /path/test.php.

Found it I think. a reference to .net when the test site is on a .com domain