Unable to capture ChatGPT response in canvas app

Hi @RezaDorrani, This is regarding the conversational ChatGPT you demoed on YouTube. I could able to manage all the steps but while capturing the response into collection, I am receiving the error below...

My Formula:

Set(varResponse1,ChatGPTConnector.ChatAPI("gpt-3.5-turbo",Collect(colChat,{role:"user",content:txtUserInput.Text})));
Collect(colChat,First(varResponse1.choices).message);