Gulp 4 uses an updated CLI (Command Line Interface). If the computer you are using already has Gulp installed, there is a good chance you have an older version of the CLI and you will encounter errors when trying to run WP Rig.
To update the Gulp CLI to work with Gulp 4, run the following commands in the command line terminal:
# Uninstall Gulp globally: npm uninstall gulp -g # Install the latest version of the Gulp 4 CLI globally: npm install gulpjs/gulp-cli -g
You may have to run
npm install again from the WP Rig directory to ensure Gulp 4 is installed and ready to run.