How to make the file upload question mandatory?

Formfacade does not use any of the file attributes such as size, type etc specified in the File upload question. It simply converts the Google Drive file upload into a html file upload. In Google Forms, you will see a short answer question, but in the Formfacade form, you will see the file upload option. You can make the converted short answer question as required in Google Forms to make the file upload mandatory.