Error when using Gradio
Hello, just like the title said. I can't perform Anime2Sketch using the Gradio demo website and I got an error.

![image](https://user-images.githubusercontent.com/49873935/118232251-797bb800-b4ba-11eb-825a-bd6f6a00fbd4.png)

And I can't use the demo image from the website.

![image](https://user-images.githubusercontent.com/49873935/118232352-9dd79480-b4ba-11eb-8c8c-e5f06358929f.png)

I don't know it is a bug or just my internet because I already try to delete the cookies and I still have that trouble.

Thank you