updated app

app.py

@@ -24,7 +24,8 @@ async def chat_interface(message, history):
             "Whoa there, playa pal! It seems the dust has clogged my circuits. "
             "Let's take a deep breath and try that again. Radical self-reliance, remember?"
         )
-        return "", history + [(message, burner_error_message)]
+        history.append((message, burner_error_message))
+        return "", history
 
 gr.ChatInterface(
     chat_interface,