Missing Controller

Userfiles_Controller could not be found

Additional Information

The system searched in the following paths:
- /home/grimsbyp/public_html/application/controllers
- /home/grimsbyp/public_html/core/libs/controllers

Request Information
controller: userfiles
action: 27KV_Grimsby_Power_FeederbyColour_Website.pdf
url: url => userfiles/27KV_Grimsby_Power_FeederbyColour_Website.pdf