Update app.py

app.py

@@ -78,7 +78,9 @@ demo = gr.ChatInterface(
         gr.Image(show_label=False)
     ],
     additional_inputs_accordion=gr.Accordion(open=True),
-    theme=gr.themes.Soft()
+    theme=gr.themes.Soft(),
+    retry_btn=None;
+    undo_btn=None;
 )