把angular项目从git拉去下拉后，通过npm install @angular/cli@9.1.12安装项目的node_module后，再通过ng serve启动项目时一直报错

报错信息如下：

ERROR in ./src/assets/custom-bootstrap-utilities.scss (./node_modules/css-loader/dist/cjs.js??ref--13-1!./node_modules/postcss-loader/src??embedded!./node_modules/sass-loader/disets/custom-bootstrap-utilities.scss)
Module build failed (from ./node_modules/sass-loader/dist/cjs.js):
SassError: Can't find stylesheet to import.
   ╷
12 │ @import "../../node_modules/bootstrap/scss/_functions.scss";

查找资料说是安装node_module时没有使用淘宝镜像，重新使用淘宝镜像安装

npm install node-sass --registry=https://registry.npm.taobao.org

npm install @angular/cli@9.1.12

后启动项目仍然报错，报错信息如下

ERROR in ./src/assets/custom-bootstrap-utilities.scss (./node_modules/css-loader/dist/cjs.js??ref--13-1!./node_modules/postcss-loader/src??embedded!./node_modules/sass-loader/disets/custom-bootstrap-utilities.scss)
Module build failed (from ./node_modules/sass-loader/dist/cjs.js):
SassError: Can't find stylesheet to import.
   ╷
12 │ @import "../../node_modules/bootstrap/scss/_functions.scss";

后又查询信息，需要安装node-sass

pm install -g cnpm --registry=https://registry.npm.taobao.org

cnpm install node-sass

安装sass后仍然报错

Error: Node Sass version 5.0.0 is incompatible with ^4.0.0.

这个信息就很明显了，直接再卸载原先sass重新安装个版本4的sass即可。

npm uninstall node-sass

npm install node-sass@4.14.1

启动项目，successfully.

所以项目一开始就是报SassError，直接安装个npm install node-sass@4.14.1应该就可以了！