Update app.py

app.py

@@ -38,8 +38,7 @@ for message in st.session_state.messages: # Display the prior chat messages
     with st.chat_message(message["role"]):
         st.write(message["content"])
 
-
-if st.session_state.messages[index] == 0:
+if st.session_state.messages[int(index)] == 0:
     with st.chat_message("assistant"):
         with st.spinner("Warming Up..."):
             response = chat_engine.chat("Provide a summary of Scribe. End your response by asking me if anything you've stated is incorrect. Then proceed with asking your series of up to 5 clarifying questions.")