Page Not Found when navigating to mypage.com/Register

Hi, I have set up my page (koiwai.xyz) and I can access my homepage and login just fine since the both exist in “/” but when I try to create a new account and navigate to koiwai.xyz/Register I get this mistake:
imagen_2022-06-20_015632054

You can find my code in my github: https://github.com/jolswolf/react_board

hi there, sadly we don’t have enough information to debug this yet - there could be many reasons why this isn’t working.

i would check these guides first to see if they help:

(if you download your site, you may be able to see if the file is where you think it should be after we finish building)