The error "xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools)" typically indicates that the Command Line Tools for Xcode are not correctly installed or configured on your Mac. This can happen after an OS update or if the Command Line Tools were removed.

Jenkins is a popular open-source automation server that helps automate parts of the software development process. It helps developers build, test, and deploy their applications. Jenkins provides hundreds of plugins to support building, deploying, and automating any project.

The below steps are will do clear your DNS cache in your Operating system macOS X version 10.10.4 or above, have to follow the steps below,