Gradio mask cannot be used

[Yurains]

Thank you for proposing this outstanding project.
I would like to ask about the "Mask" feature on Gradio — it doesn’t seem to be working.
An error appears:
"Expecting value: line 1 column 1 (char 0)"
I encountered a similar issue when deploying it myself.
Additionally, the Hugging Face webpage also isn’t functioning properly.

Could this be an issue with the Gradio API?
Or is it caused by something else?
Has anyone else experienced the same or a similar issue?