Angular 4: no component factory found,did you add it to @NgModule.entryComponents?

I’m using Angular 4 template with webpack
and I have this error when I try to use a component (ConfirmComponent):

No component factory found for ConfirmComponent. Did you add it to
@NgModule.entryComponents?

The component is declared in app.module.server.ts

@NgModule({
  bootstrap: [ AppComponent ],
  imports: [
    // ...
  ],
  entryComponents: [
    ConfirmComponent,
  ],
})
export class AppModule { }

I have also app.module.browser.ts and app.module.shared.ts

How can I fix that?