Update clbaseimplementation.py

clbaseimplementation.py

@@ -45,7 +45,9 @@ async def main():
 
 @cl.on_message
 async def main(message: str):
-    cl.user_session.set("history",cl.user_session.get("history").append({"role": "system", "content":message})
+    h = cl.user_session.get("history")
+    h.append({"role": "system", "content":message})
+    cl.user_session.set("history",h)
     resp = ""
     async for stream_resp in await openai.ChatCompletion.create(
           model="gpt-3.5-turbo",