Knowledge error in Studio

What is the correct way to use KB in CrewAI Studio. I keep getting an error that requires 2 parmaters - body and response

I am a new user to CrewAI Studio and I am trying to use “Knowledge” feature in CrewAI studio but I don’t even see an option anywhere. I have a need to upload couple of pdf files to be used as “Knowledge”. Any help would be greatly appreciated.