Update chatbot-gradio.py

chatbot-gradio.py

@@ -246,7 +246,7 @@ async def handle_query(user_input: str, session_state:str):
             settings=settings
         )
 
-        func_name = result.model_dump()["metadata"]["messages"]["messages"][2]["items"][0]["name"]
+        func_name = if result.model_dump()["metadata"]["messages"]["messages"][2]["items"][0]["name"] else None
         print(func_name)
         log_func = kernel.get_function("ChatMemoryPlugin", "log_interaction")
         await log_func.invoke(