Update app.py

app.py

@@ -72,7 +72,7 @@ with st.sidebar:
     # Add a button to clear the session state
     if st.button("Clear Session"):
         st.session_state.messages = []
-        st.experimental_rerun()
+        st.rerun()
 
     # Credit:
     # current_year = current_year()  # This will print the current year