Topic on Project:Support desk

I have followed the Manual on Short URLs and it works perfectly except for yet-to-be-created pages.

For example, on Main_Page there is a link to the uncreated page Sub_Page, this URL points to my 'ugly' MediaWiki installation folder and uses an ugly url:

mysite.com/mediawiki/index.php?title=Sub_Page&action=edit&redlink=1

It should look like this:

mysite.com/wiki/Sub_Page&action=edit&redlink=1

The rest of my website uses the prety URLs, so I have no idea why this is happening.

How do I fix this?

Found the answer to my own question by chance here: https://www.mediawiki.org/wiki/Manual:$wgActionPaths