probably still not working

app.py

@@ -492,7 +492,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
             value=""
         )
 
-    # Chat interface
+    # Chat interface - using only valid parameters
     chat = gr.ChatInterface(
         fn=generate_response,
         additional_inputs=[
@@ -509,9 +509,6 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
             ["Solve: If a train travels 120 miles in 2 hours, what is its average speed?"],
         ],
         cache_examples=False,
-        retry_btn="Retry",
-        undo_btn="Undo",
-        clear_btn="Clear",
     )
 
     gr.Markdown(