Ao implementar o capítulo 6 - Implementando o Lazy loading, começou a dar o seguinte erro no console na pagina inicial http://localhost:4200/:
core.mjs:7644 ERROR NullInjectorError: R3InjectorError(AppModule)[Router -> UrlSerializer -> UrlSerializer -> UrlSerializer]: NullInjectorError: No provider for UrlSerializer! at NullInjector.get (core.mjs:6368:27) at R3Injector.get (core.mjs:6795:33) at R3Injector.get (core.mjs:6795:33) at R3Injector.get (core.mjs:6795:33) at injectInjectorOnly (core.mjs:4779:33) at ɵɵinject (core.mjs:4783:12) at inject (core.mjs:4876:12) at setupRouter (router.mjs:4583:33) at Object.factory (router.mjs:5517:144) at R3Injector.hydrate (core.mjs:6896:35)
