/ doesn't redirect to index.html

Hello everyone .
I have a problem: my latest github project use /docs as source for github pages, I can access the site if use /index.html, but cant if it’s just https://zekfad.github.io/ueue/ (for now it’s 404).
How can I fix this?
Repo: https://github.com/Zekfad/ueue/

I resolved the issue: you have to make additional commit, in order to update github pages redirects (idk why it is so?)