Missing Controller

About_Controller could not be found

Additional Information

The system searched in the following paths:
- /home/d3wqug7jmm8u/public_html/application/controllers
- /home/d3wqug7jmm8u/public_html/core/libs/controllers

Request Information
controller: about
action: careers
params: 0 => attachment 1 => april-19-2013-28-150x150
url: url => about/careers/attachment/april-19-2013-28-150x150/