错误版本
"node-sass": "^5.0.0"
"sass-loader": "^10.1.0"
这是因为node-sass 和 sass-loader版本不适配导致,请安装如下版本,并且运行如下命令:
"node-sass": "^4.14.1"
"sass-loader": "^8.0.0"
npm uninstall sass-loader
npm uninstall node-sass
npm install node-sass@4.14.1
npm install sass-loader@8.0.0