I have a student who is trying to answer an assignment for a professor.  The options of the assignment are text entry or file upload.  Every time the student attempts to complete the assignment they receive an error message, "error updating submission draft"  see below image. 

I went in and acted as the student and attempted to submit a response and received the same message.  All other students in the class have been able to submit their response to the assignment.  I cannot locate something different here.  

Any ideas of a next step of the troubleshooting?