Update app.py

app.py

@@ -62,10 +62,10 @@ conversation = LLMChain(
 
 # Input from user
 if prompt_input := st.chat_input("Say something..."):
-    history.add_user_message(prompt_input)
     st.chat_message("user").write(prompt_input)
 
+    # Let LangChain handle history
     response = conversation.run(input=prompt_input)
 
-    history.add_ai_message(response)
     st.chat_message("assistant").write(response)
+