src/app/app-routing.module.ts

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { PageNotFoundComponent } from '@shared/components/pageNotFound/pageNotFound.component';

const appRoutes: Routes = [
  { path: '', redirectTo: '/overview', pathMatch: 'full' },
  {
    path: 'admin',
    loadChildren: './pages/admin/admin.module#AdminModule',
  },
  { path: '**', component: PageNotFoundComponent },
];

@NgModule({
  imports: [RouterModule.forRoot(appRoutes)],
  exports: [RouterModule],
})
export class AppRoutingModule {}