I type “grunt clean” in the command bar and get the following error

GRUNT-CLI: The Grunt Command Line Interface (v1.2.0) Fatal error: Unable to find local grunt. If you're seeing this message, grunt hasn't been installed locally to your project. For more information about installing and configuring grunt, please see the Getting Started guide: http://gruntjs.com/getting-started`

The solution

sudo npm install -g grunt-cli

After running the above command continue with the following command

cd [my project root]
npm install grunt --save-dev

The following error occurred when running Grunt

Loading "Gruntfile.js" tasks... ERROR >> Error: Cannot find module 'node-minify' Warning: Task "default" not found. Use --force to continue. Aborted due to warnings.

Rerun the

NPM install -- save-dev node-monify NPM install