To readers of this thread,

The problem I had was that the server didn't have the correct modules installed. So after installing the Config::IniFiles on the server it worked perfectly.

To confirm this was the problem I included the line use CGI::Carp qw(fatalsToBrowser); to my "headers" list and it printed out the problems I was facing perfectly when I ran it on the server.

Thank you to both Mr Mischief and Anonmyous Monk who replied.