Minor fix

app.py

@@ -166,9 +166,9 @@ with gr.Blocks() as demo:
 
     delete = gr.Button('Reset chat')
 
-    with gr.Row():
-        save = gr.Button('保存对话（在 `log` 文件夹下）', visible=False)
-        load = gr.UploadButton('读取对话', file_types=['file'], file_count='single', visible=False)
+    with gr.Row(visible=False):
+        save = gr.Button('保存对话（在 `log` 文件夹下）')
+        load = gr.UploadButton('读取对话', file_types=['file'], file_count='single')
 
     input_list = [message, chatbot, state, max_length, top_p, temperature, memory_limit]
     output_list = [chatbot, state, message]