Describes the cause and action for error messages.
Error Message(English):
install_github error setting certificate
error setting certificate verify locations: ・ Issue #116 ・ jeroen/curl ・ GitHub
https://github.com/jeroen/curl/issues/116
devtools package namespace-mangling + S4. ・ Issue #1 ・ r-lib ... - GitHub
https://github.com/r-lib/devtools/issues/1