Github ng github-pages deploy not working

Describes the cause and action for error messages.

Error Message(English)：
ng github-pages deploy not working

Resolution

github-pages deployment instructions are not working ・ Issue #26803 ...
https://github.com/angular/angular/issues/26803

ng github-pages:deploy pushes entire project, not just dist/ ・ Issue ...
https://github.com/angular/angular-cli/issues/1984

ng github-pages:deploy. Command does not work out of the box ...
https://github.com/angular/angular-cli/issues/4277

Successfully deploying to unsuccessful Github Pages ・ Issue #3794 ...
https://github.com/angular/angular-cli/issues/3794

Where is the command "ng github-pages:deploy"? ・ Issue #4659 ...
https://github.com/angular/angular-cli/issues/4659

Angular-CLIで作成したアプリをGithub Pagesにデプロイする | プロカツ！
https://prokatsu.com/angular-cli_github-pages_deploy/

Deploying an Angular App to Github Pages ← Alligator.io
https://alligator.io/angular/deploying-angular-app-github-pages/

Deploying an Angular app to GitHub Pages - Goalist Developers Blog
http://developers.goalist.co.jp/entry/2018/06/21/095909

angular-cli-ghpages - npm
https://www.npmjs.com/package/angular-cli-ghpages