Update app.py

app.py

@@ -54,7 +54,7 @@ with gr.Blocks(css="#chatbot{height:300px} .overflow-y-auto{height:500px}") as r
     submit_btn = gr.Button("提交")
     txt.submit(answer, [txt, state], [chatbot, state])
     submit_btn.click(answer, [txt, state], [chatbot, state])
-    clear = gr.ClearButton([msg, chatbot])
+    clear = gr.ClearButton([txt, chatbot])
     
 rxbot.launch()