Update app.py

app.py

@@ -30,7 +30,7 @@ def botResponse(user_input):
     messages.append({"role": "assistant", "content": system_message})
 
     chat_transcript = ""
-    for message in msg_contents:
+    for message in messages:
         if (message["role"] != "system"):
             chat_transcript += message["role"] + ": " + message["content"] + "\n\n"