Students are unable to upload any assignments using Turnitin. The site indicates there is an error in programming that is causing the issue.

This is the error message the students are getting:

Coding error detected, it must be fixed by a programmer: upload_manager
class can not be used any more, please use file picker instead

More information about this error
<http://docs.moodle.org/29/en/error/debug/codingerror>