Update app.py

app.py

@@ -570,7 +570,7 @@ def save_and_download_chat_log(chat_history):
         if assistant_message:
             writer.writerow(["assistant", assistant_message])
     
-    return gr.File.update(value=output.getvalue(), visible=True, filename=filename)
+    return (output.getvalue(), filename)
 
 def resume_chat_from_log(chat_history):
     # チャットボットのUIを更新
@@ -714,10 +714,14 @@ def build_gradio_interface():
                 with gr.Row():
                     download_log_button = gr.Button("チャットログをダウンロード")
                 
-                download_log_output = gr.File(label="ダウンロード")
+                download_log_output = gr.File(label="ダウンロード", visible=False)
+                
+                def update_download_output(chat_history):
+                    content, filename = save_and_download_chat_log(chat_history)
+                    return gr.File.update(value=content, visible=True, filename=filename)
                 
                 download_log_button.click(
-                    save_and_download_chat_log,
+                    update_download_output,
                     inputs=[chatbot],
                     outputs=[download_log_output]
                 )