My portfolio in github page link showing blank white page

Hy Everyone,
Recently I had designed my portfolio using Reacjt JS and I had uploaded it on my repository then I had created link through git pages from the repository setting but when I click on it, it always shows me blank white page. Please help me out.
Link to my repository https://github.com/PedroHugo11/portfolio
Link to my git pages published URL: https://pedrohugo11.github.io/portfolio/

you don’t have index.html but you have README.md that will be the default page, but since you have a special setup, GitHub Pages is confused where it will be getting the default page.