Can someone tell me why I might be getting this error when trying to use query knowledge agent card. Now to be clear, I first use a single choice capture card. But if the user gives a raw input instead of choosing, then I run a query knowledge agent card to reply . Input is {{event.preview}} . I have enabled manual answering, I have also made retries for single choice capture =0 I have also added transition to handle failure in the single choice capture card. Am I missing anything?