Thread:Project:Support desk/No CSS on login page

I just installed MediaWiki a few minutes ago. Super newbie. Don't know anything about it at all. I was having a look around and I noticed that my login page has no CSS. When looking in the Chrome debugger it turns up as an error:

Failed to load resource: the server responded with a status of 414 (Request-URI Too Long) http://XXXXXX.com/wiki/load.php?debug=false&lang=en&modules=jquery.accessKeyLabel%2Cclient%2CmwExtension%2CtabIndex%2Cthrottle-debounce%7Cmediawiki.legacy.ajax%2Cwikibits%7Cmediawiki.notify%2Cutil%7Cmediawiki.page.startup%7Cskins.vector.js&skin=vector&version=20150512T023209Z&*

Reinstalled. Nothin'. Not sure how to fix this? I didn't do anything, just made a new account - I have zero experience in this.

Versions and stuff:

MediaWiki - 1.24.2

PHP - 5.3.29 (cgi-fcgi)

MySQL - 5.5.42-cll