I’m not an AirTable user and do not have any familiarity with their API or this example, but it sounds like you are saying you are including the table name in the “Endpoint” you put in the credentials, and my reading of the docs for that action say you should not. I would expect you enter:
Endpoint: https://api.airtable.com/v0/BASE-ID/
API key: YOUR-API-KEY
As they would be copied from the Airtable’s site.
I believe per the example script, you create an ATTable
with the table name and I assume that is getting appended to the URLs for you by the scripts.