no chat no save

app.py

@@ -149,7 +149,7 @@ with container:
             {"role": "system", "content": "You are a helpful assistant."}
         ]
 
-    if save_button:
+    if save_button and st.session_state['generated'] and st.session_state['past']:
         # Send a ping to confirm a successful connection
         try:
             client.admin.command('ping')