Github pages site not found

Describes the cause and action for error messages.

Error Message(English)：
pages site not found

Resolution

How to fix page 404 on Github Page? - Stack Overflow
https://stackoverflow.com/questions/11577147/how-to-fix-page-404-on-github-page

Github site not found 404
https://stackoverflow.com/questions/52934125/github-site-not-found-404

Github webpage - Error 404 page not found
https://stackoverflow.com/questions/51508617/github-webpage-error-404-page-not-found

Github Pages site not detecting index.html
https://stackoverflow.com/questions/45362628/github-pages-site-not-detecting-index-html

Jekyll on github pages showing error: 404 Index.html not ...
https://stackoverflow.com/questions/29370239/jekyll-on-github-pages-showing-error-404-index-html-not・・・

Solved: index.html not working - GitHub Community Forum
https://github.community/t5/GitHub-Pages/index-html-not-working/td-p/1266

GitHub Pages 入門 - Part 1 - いつかエンジニアになりたい
http://berukann.hatenablog.jp/entry/2018/08/12/161030

Site not building on GitHub pages ・ Issue #67 ・ mmistakes/skinny ...
https://github.com/mmistakes/skinny-bones-jekyll/issues/67

Creating a custom 404 page for your GitHub Pages site - GitHub Help
https://help.github.com/en/articles/creating-a-custom-404-page-for-your-github-pages-site