IOS Shortcuts error with authentication

Hello dear community. I’m starting to learn to use iOS shortcuts and watched a couple of YouTube tutorials and I’m trying to run a basic post function but this error shows up:
{“error”:{“type”:“INVALID_REQUEST_UNKNOWN”,“message”:“Invalid request: parameter validation failed. Check your request data.”}}

I created a blank document and just wanted to input a new field data. I copied the URL from de Airtable API and also I copy the API key.

This is how I typed the ‘code’:

I’ll appreciate any help with this simple starter use of integration with iOS shortcuts.