Describes the cause and action for error messages.
Error Message(English)：
branch source plugin
GitHub Branch Source Plugin - Jenkins - Jenkins Wiki
https://wiki.jenkins.io/display/JENKINS/GitHub+Branch+Source+Plugin
GitHub Branch Source Plugin - Jenkins Plugins
https://plugins.jenkins.io/github-branch-source
イマドキの GitBucket + Jenkinsの連携は Jenkinsfile と GitHub ... - Qiita
https://qiita.com/kounoike/items/52fa35ca5813d0edc7b7
GitHub - jenkinsci/github-branch-source-plugin
https://github.com/jenkinsci/github-branch-source-plugin
Setup Jenkins GitHub Branch Source plugin ・ gitbucket/gitbucket Wiki ...
https://github.com/gitbucket/gitbucket/wiki/Setup-Jenkins-GitHub-Branch-Source-plugin
github-branch-source-plugin/README.md at master ・ jenkinsci/github ...
https://github.com/jenkinsci/github-branch-source-plugin/blob/master/demo/README.md
GitHub - Argelbargel/gitlab-branch-source-plugin: Jenkins-Plugin to ...
https://github.com/Argelbargel/gitlab-branch-source-plugin
GitHub Branch Source Plugin - CloudBees Network
https://go.cloudbees.com/docs/plugins/github-branch-source/
JenkinsのGitHubの設定方法について - Google Groups
https://groups.google.com/d/topic/jenkinsci-ja/03sVa1v2nAc