https://github.com/jenkinsci/github-plugin/blob/29e7aec/src/main/resources/org/jenkinsci/plugins/github/admin/GitHubHookRegisterProblemMonitor/index.properties#L12
help.for.page.and.debug.info=This page shows problems with webhooks, and ignored projects. A detailed stacktrace for any of the problems can be found in the system log. \ For improved debugging in the Jenkins interface, enable these logs:
That isn't very helpful. More helpful would be: