Update app.py

app.py

@@ -113,7 +113,7 @@ with gr.Blocks() as demo:
     clear = gr.Button("Clear")
 
     def respond(message, chat_history):
-        temp_str = "".join(chat_history)
+        temp_str = "".join([f"{t[0]} {t[1]}" for t in chat_history])
         bot_message = gen(temp_str+message)
         chat_history.append((message, bot_message))
         time.sleep(1)