How to enable search

[liunaijie]

I follow the example setting, But the search is not working.
https://liunaijie.github.io/search
And I try to just use the example config (just add markup.goldmark.renderer.unsafe: true) And I find the search is still not working.
Can you help check is there anything wrong, thanks.

Blog Link:
https://liunaijie.github.io/search