I'd guess that your mapping from the Gmail trigger to the Decile Hub Create Organization Prospects is not functioning correctly, so when the event sends to Hub, it is sending an empty body. When setting up the Zap, are you able to do a Test one and get it to run successfully?

Hi Houston, thank you for the response
Getting to your question, thats the answer for the test. So I'm never able to conclude the workflow

Ah! There was a typo in this particular action, so it was sending an incorrect call to Hub. I've rolled out a fix, so make sure your Zap is using the latest version of the Hub action and it should work.

Thank you Houston.
How can I call the Auto-fill form fields using zapier, so it reads an email and create a new prospect from that email, filling the fields automatically?
Thanks again in advance

You cannot currently do that from zapier. You have to map fields manually from whatever the trigger action is to the hub action.