I am encountering an issue with uploading a file to a Google Form.
When I click on "Attach file" in Google Forms, it opens an iframe for file selection. The domain of the iframe is different from the main form. I retrieved the source (src) URL of the iframe and opened it in a new tab. However, when I upload a file, it doesn't link back to the original form. How can I resolve this problem?
Thank you in advance.