How to add tokenGetter to appModule. Problem solver: "Cannot read property 'tokenGetter' of undefined at new JwtInterceptor"

tokenGetter.ts

// Create a function that get the token from some storage
export function tokenGetter() {
  console.log('token');
  return localStorage.getItem('token');
}

@NgModule({
  declarations: [
    AppComponent,
  ],
  imports: [
    //...
    JwtModule.forRoot({
      config: {
        tokenGetter: () => tokenGetter()
      }
    }),
    //...
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }