fix function name

app.py

@@ -361,7 +361,7 @@ with gr.Blocks(css=css) as demo:
             download_from_url_btn = gr.DownloadButton(label="Download Image")
 
             download_from_url_btn.click(
-                fn=download_image_locally,
+                fn=download_locally,
                 inputs=[image_url_input, filename_input],
                 outputs=[download_from_url_btn],
             )