Update app.py

app.py

@@ -135,7 +135,7 @@ elif uploaded_files:
             # Display assistant response in chat message container
             with st.chat_message("assistant"):
                 st.write(response)
-                st.expander("See reference:")
+                st.expander("See reference:"):
                     st.table(result)
 
             # Add assistant response to chat history