Update app.py

app.py

@@ -27,7 +27,7 @@ chat_history = ['']
 
 
 with gr.Blocks() as demo:
-    chatbot = gr.Chatbot(value=[], elem_id="chatbot").style(height=650)
+    chatbot = gr.Chatbot()
     msg = gr.Textbox()
     clear = gr.ClearButton([msg, chatbot])
 
@@ -41,7 +41,7 @@ with gr.Blocks() as demo:
         bot_message =  bot_message.last # Get the last response
         chat_history.append(bot_message)  # Append the bot's message to the chat history
         time.sleep(2)
-        return "", chat_history
+        return chat_history, ""
 
     msg.submit(respond,[msg,chatbot],[msg,chatbot])