Hello, this is my first time posting.
I'm trying to build a flow that would, among other things, send an email notification to various email addresses once a new form has been submitted. To get started, I created a very basic test flow that looks at specified form and send an email notification to me, nothing fancy. I'm able to select the Form ID from the drop-down list, and use a correct email address.

But the flow fails every time I submit a form:

And I can't understand why. Initially I had the form within a Group Form site, and then moved into my own personal site, which didn't make a difference. The form settings are as follows:

If I tick 'Get email notifications of each response' I do get an automated notification from Forms but I would like a build a more bespoke email notification with Flow, which doesn't work.
What am I doing wrong? I've been trawling the tutorials and other community queries and haven't been able to find a solution.
Thank you x