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.