Alas, the https://haitouch.ga/me/shingo/index link gives me the errors on both Firefox and Chrome still:
Ay, there’s the rub; Godot 4 and above is incompatible with GitHub Pages! Shavian.school should be updated to point to Itch instead of that link.
Awww that sucks. Well, thanks for addressing it!
You CAN play this game here on Itch, can’t you?
Yep, works fine embedded in Itch