XF 1.4 500 Internal Server Error

Earlier I was messing around with some Apache2 settings with my server, attempting to make a control panel work correctly. In the process of this it seems that I caused XenForo to error, and I'm really unsure what to do.

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at noreply@mcwm.co to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.