无法读取空角度6的属性'config'

Question

在角度6上，我正在使用 npm install 安装缺少的软件包。但是当我运行项目时，出现错误： Cannot read property 'config' of null TypeError: Cannot read property 'config' of null

这是一个日志文件

`20 error code ELIFECYCLE
21 error errno 1
22 error qwerty@0.0.0 start: `ng serve`
22 error Exit status 1
23 error Failed at the qwerty@0.0.0 start script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]`

谁能告诉我我想念什么？