It's related to the way it is configured. It's trying to load the
central notice from:
instead of
You seem to have $wgCentralPagePath with its default value.
I suspect that setting
$wgCentralPagePath =
"http://www.tmswiki.org/w/index.php";
will fix it.
I've also submitted a change to
https://gerrit.wikimedia.org/r/3717
which should provide a better default.
Best regards