我在中出错
./src/styles/theme/bootstrap.scss (./node_modules/@angular-devkit/build-angular/src/angular-cli-files/plugins/raw-css-loader.js!./node_modules/postcss-loader/src??embedded!./node_modules/sass-loader/lib/loader.js??ref--14-3!./src/styles/theme/bootstrap.scss)
Module build failed (from ./node_modules/sass-loader/lib/loader.js):
未定义^未定义变量：
"$grid-row-columns".
in {path}node_modulesbootstrapscssmixins_grid-framework.scss (line 37, column 30)
我刚刚找到了解决方案。我将引导程序降级为4.3.1版