I am creating my questionnaire and every time I click on "preview questionnaire without access restriction", the following message occurs:
Questionnaire Error on (page??)
An error occurred while creating the questionnaire page.
The following error occured on page ?? of your questionnaire base (survey musicalcocreation):
There is no question with the ID EX20 in this project.
I don't understand where the problem is, since I don't have an item with the ID EX20. I used to have one and deleted it. However, it ist not included in my questionnaire.
THANK YOU in advance for your help !!