Missing Controller

Js_Controller could not be found

Additional Information

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

Request Information
controller: js
action: jquery
params: 0 => ui.datepicker.js
url: url => js/jquery/ui.datepicker.js