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                        /前端开发
                        
                            /JavaScript
                        
                        /ES6快速入门

老师，为什么出现了这个错误Failed at the es6-webpack@1.0.0 start script.

npm start

> es6-webpack@1.0.0 start C:\Users\admin\es6-webpack
> webpack-dev-server --open

'webpack-dev-server' ▒▒▒▒▒ڲ▒▒▒▒ⲿ▒▒▒Ҳ▒▒▒ǿ▒▒▒▒еĳ▒▒▒
▒▒▒▒▒▒▒▒▒ļ▒▒▒
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! es6-webpack@1.0.0 start: `webpack-dev-server --open`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the es6-webpack@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above