Include Responses Inside Another Question - What is wrong?

Hello, I am trying to display the response label for Q1 (select one) in Q2.

Q1: During your last menstrual period, what was the material that you used the most?
Q2: Why did you use X the most?

I have created an intermediate calculation question but but when I try to preview the form I get an error : u’nv1ml60’

I have attached screenshot of the excel sheet.