[JavaScript知识库]Syntax Error: Error: PostCSS received undefined instead of CSS string

没找到办法

 ERROR  Failed to compile with 1 error                                                                                              13:29:24

 error  in ./src/App.vue?vue&type=style&index=0&id=7ba5bd90&lang=scss&scoped=true

Syntax Error: Error: PostCSS received undefined instead of CSS string


 @ ./node_modules/vue-style-loader??ref--9-oneOf-1-0!./node_modules/css-loader/dist/cjs.js??ref--9-oneOf-1-1!./node_modules/vue-loader-v16/dist/stylePostLoader.js!./node_modules/postcss-loader/src??ref--9-oneOf-1-2!./node_modules/sass-loader/dist/cjs.js??ref--9-oneOf-1-3!./node_modules/cache-loader/dist/cjs.js??ref--1-0!./node_modules/vue-loader-v16/dist??ref--1-1!./src/App.vue?vue&type=style&index=0&id=7ba5bd90&lang=scss&scoped=true 4:14-431 15:3-20:5 16:22-439
 @ ./src/App.vue?vue&type=style&index=0&id=7ba5bd90&lang=scss&scoped=true
 @ ./src/App.vue
 @ ./src/main.js
 @ multi (webpack)-dev-server/client?http://localhost:8080&sockPath=/sockjs-node (webpack)/hot/dev-server.js ./src/main.js

yarn add node-sass@5.0.0 --save

https://www.cnblogs.com/xingjibin/p/13032796.html

yarn add node-sass@5.0.0 --save

@^4.0.0版本node-sass安装不成功
试过各种博客上的方法不成, 最后把本机环境的nodejs版本由v16降低到了v14,再用cnpm才安装成功
https://www.cnblogs.com/huic/p/15104737.html

npm i vue-lazyload element-ui node-sass sass-loader vue-awesome-swiper

今天想重新运行一下这个mimall项目，之前可以run，现在sass，版本问题，也许是，弄了一上午多，太坑了。
以后要找新的项目做