grunt clean in magento 2.1.3 root folder I get error
If you have installed the plugin already, please setting the static mapping. See https://github.com/shootaroo/jit-grunt#static-mappings Warning: Task "clean" failed. Use --force to continue. Aborted due to warnings.
npm install clean &
npm install clean --save-dev but get the same error. I looked at the url they sent but it is not clear what I should add where?
How do I solve this error?