Error with testing Generative QnA solution

Working in Studio
1

Hi,

We are testing Generative QnA solution now and has configured all params which is required in the guidance. But we got the error in tryout when we testing, it says
“Flow [Retrieval-augmented Generative QnA - promptCompletion] (ID=87029e3a-5696-4653-9262-7b6c4b7971b3): Vertex (ID=2ccbd240-4188-4d0a-a206-a75e5c111f9d): Script action execution failed at line #10: java.io.IOException: {“error”:{“code”:”“,“message”:“Invalid expression: Could not find a property named ‘chunk’ on type ‘search.document’.\r\nParameter name: $select”}}
javax.script.ScriptException: java.io.IOException: {“error”:{“code”:”",“message”:“Invalid expression: Could not find a property named ‘chunk’ on type ‘search.document’.\r\nParameter name: $select”}}
at Script4.run(Script4.groovy:10) ~[?:?]
"
Could someone help us with it?

BR,
Qiqi