I have come across similar situation when the query included in one of the component in ITPilot wrapper is wrong and it was throwing a similar error for me. I have performed the below checks to resolve the error,
* Ensure the query which I have included in the ITPilot wrapper is valid.
* Check the ITPilot log and execution trace of the ITPilot wrapper execution to get detailed information about the error.
In case, if you are a valid Support User, you may open a Support Case at the Denodo [Support Site](https://support.denodo.com/) and the Denodo Team will help you with appropriate solutions.
Hope this helps!