Missing Controller

Js_Controller could not be found

Additional Information

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

Request Information
controller: js
action: '+item.images%5bo.image_width%5d.source+'
url: url => js/' item.images[o.image_width].source '