我安装Node Js然后安装Grunt。当我运行Grunt Copy命令时，cmd会显示以下错误：
local npm module "grunt-prettify" not found. is it installed?
local npm module "grunt-autoprifixer" not found. is it installed?
local npm module "grunt-contrib-cssmin" not found. is it installed?
local npm module "grunt-contrib-uglify" not found. is it installed?
任何人都可以告诉我如何摆脱这些消息。提前谢谢！
答案 0 :(得分：1)
您需要运行npm install grunt-prettify grunt-autoprifixer grunt-contrib-cssmin grunt-contrib-uglify