Hi,
I have a simple flow that I have got linked to a powerapp, please see configuration below:

This links to my powerapp with no issues and pulls the response back into the app.
I have tried to put this flow into another powerapp and I am getting the below error:

I do not understand how I can link it into one powerapp and not another, the code I am using is exactly the same and I can't see anything that I have done different within the apps.
Any advice would be much appreciated!