Update app.py

app.py

@@ -2,7 +2,7 @@
 import streamlit as st
 
 
-from langchain.chat_models import ChatOpenAI
+from langchain_openai import ChatOpenAI
 from langchain.schema import(
     AIMessage,
     HumanMessage,
@@ -20,6 +20,11 @@ if "sessionMessages" not in st.session_state:
         SystemMessage(content="You are a renowned doctor specializing in hypertension.")
     ]
 
+#if 'sessionMessages' not in st.session_state:
+ #   st.session_state.sessionMessages = []
+
+# Now you can append to it safely
+#st.session_state.sessionMessages.append(HumanMessage(content=question))
 
 
 def load_answer(question):