低版本node-sass安装失败的解决办法
"devDependencies": { "dart-sass": "^1.25.0", "node-sass": "npm:dart-sass@^1.25.0", "sass-loader": "^7.3.1", },
找到package.json 把这个放到开发依赖中 然后npm i

"devDependencies": { "dart-sass": "^1.25.0", "node-sass": "npm:dart-sass@^1.25.0", "sass-loader": "^7.3.1", },