mam taki blad :
npm ERR! code E404
npm ERR! 404 Not Found - GET https://codeload.github.com/Modernizr/customizr/legacy.tar.gz/develop
npm ERR! 404
npm ERR! 404 'customizr@https://github.com/Modernizr/customizr/tarball/develop' is not in this registry.
npm ERR! 404
npm ERR! 404 Note that you can also install from a
npm ERR! 404 tarball, folder, http url, or git url.