Google Drive Input returns error whenever I click on it

[Zona]

Hi guys, I'm currently facing a problem. I want to use the tool "Google drive input" to access the Google sheet I saved in my drive. It worked at first, but whenever I click on the tool again, it shows error message"Required fields cannot be empty." I tried to use a Macro to wrap it up. In this case, I won't click on the tool. BUT I really want to know the reason.

[jdminton]

What does the configuration for your input tool look like?