Hello to everyone, I’m new on this amazing Kobotoolbox, I’m working on my first form. I defined the questions (more or less :)) but today this message error appears when I tried to preview that form.
“Cannot read property ‘forEach’ of undefined”
Why? What happens? Everything seemed to be ok before that message.
Thank you in advance! 
Luca
Hi @luca_bolognini,
Welcome to the community! Sometimes you see error message in your survey Preview when you mistype language that you specify within your survey form,
Mistyping language English (en) as English ("English (en)") should cause preview issue.
In the survey tab of your xlsform:
In the choices tab of your xlsform:
In the settings tab of your xlsform:
Preview with Error Message:
Reference xlsform: Problem
Preview Error (Problem).xlsx (11.0 KB)
Correctly typing language English ("English (en)") as English (en) should solve your preview issue.
In the survey tab of your xlsform:
In the choices tab of your xlsform:
In the settings tab of your xlsform:
Preview with Error Message:
Reference xlsform: Solution
Preview Error (Solution).xlsx (11.0 KB)
Have a great day!
OOOOOHHHHHHHH, absolutely yes @Kal_Lam ! It is true, One of the last settings that I set up was language. The error appeared after the language setting…
THANK YOU very much!
