error NG6002: Appears in the NgModule.imports of AppModule, but could not be resolved to an NgModule class

Question

First time using firestore and I\'m getting this error. It seems to be a problem with Ivy, from my research. I don\'t have a lot of experience modifying tsconfig.app.json, w

Answer 1

I was adding service to module i.e. app.module.ts. I added it into imports array instead of providers array.

@NgModule({
  imports: [
    MyService // wrong here
  ],
  providers: [
    MyService // should add here
  ]
})
export class AppModule { }