title: Appears in the NgModule.imports of AppModule, but could not be resolved to an NgModule class in angular 8
body: <p>ERROR in node_modules/@angular/common/http/http.d.ts:2801:22 - error NG6002: Appears in the NgModule.imports of AppModule, but could not be resolved to an NgModule class</p>
  
  <pre><code>2801 export declare class HttpClientModule {
  </code></pre>