我让JHipster（版本4.14.4）运行正常，但在尝试学习Angular 5时，还安装了Angular。现在，当我尝试创建一个JHipster应用程序时，我收到以下错误，只在浏览器中显示一个空白页面：
[3/5] Fetching packages...
[4/5] Linking dependencies...
warning " > bootstrap@4.0.0" has unmet peer dependency
"popper.js@^1.12.9".
[5/5] Building fresh packages...
success Saved lockfile.
后来：
ERROR in [at-loader] ./src/main/webapp/app/admin/user-management/user-management-detail.component.ts:23:9
TS90010: Type 'Subscription' is not assignable to type 'Subscription'. Two different types with this name exist, but they are unrelated.
Property '_parent' is protected but type 'Subscription' is not a class derived from 'Subscription'.
error Command failed with exit code 2.
有没有办法删除与JHipster和Angular相关的所有内容并重新开始？或者有人知道造成这种情况的原因吗？