Update app.py

app.py

@@ -44,7 +44,7 @@ with gr.Blocks() as demo:
 
             upload_file = gr.File(label="從電腦添加文件", file_types=[".txt", ".pdf", ".docx"])
             add_file_button = gr.Button("添加到來源列表")
-            file_display = gr.Radio(label="已上傳的文件", interactive=True, multi_select=True)
+            file_display = gr.CheckboxGroup(label="已上傳的文件", interactive=True)
 
             add_file_button.click(add_to_file_list, inputs=[upload_file, file_list], outputs=[file_display, upload_file])