[npm] Module build failed: Error: "extract-text-webpack-plugin" loader is used without the corresponding plugin,

vue-cli 실행시 아래와 같은 에러가 나올 경우

Module build failed: Error: "extract-text-webpack-plugin" loader is used without the corresponding plugin,

윈도우 환경이라면 명령어프롬프트(cmd)를 관리자 권한으로 실행 후 npm install -> npm run dev 해보도록 하자. 

if you use windows, open the cmd with administrator authority. and npm install -> npm run dev