Google sheets Missing value of required parameter 'rowNumber'. Error

Welcome to the Make community!

In short, delete the Iterator and it’ll make sense.
This is because you do not have an ARRAY to Iterate over.

I’d recommend going through the Make Academy if you haven’t yet!

Here are some useful links and guides you can use to learn more on how to use the Make platform, apps, and app modules. I found these useful when I was learning Make, and hope they might benefit you too —

Learn Make

How-Tos