Update: change response

app.py

@@ -79,5 +79,5 @@ if st.session_state.messages[-1]["role"] != "assistant":
             response = generate_llama_index_response(prompt)
             placeholder = st.empty()
             placeholder.markdown(response)
-    message = {"role": "assistant", "content": response}
+    message = {"role": "assistant", "content": response.response}
     st.session_state.messages.append(message)