Hey ;)
Most likely the error occures due to some missing access rules over the file entity you're trying to download.
Since it's a marketplace module I would suggest you to double check the security. Much more exactly I mean the security of the role you have used to download the file and check if it has access to the marketplace module Questionnaire. The fundamental issue is that there are no rights over the file document entity that user role is trying to download.
As per the error message; the microflow expects an object but the button action does not pass the expected object.
This can be due to either:
- button is not inside a widget that provides (or you didn’t configure “Pass selection” in the button) the expected object.
- user role may not have read access to the object you are passing.