What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You are correct, I opened your form and I didn't see the File Upload field. I cloned your form and I saw the File Upload field.
I checked your form and I saw a condition related to the File Upload field.
Please delete that since it indicates an error wherein the field being used in the condition is missing or deleted.
Hope that helps. Thank you.