src/app/errors/errors.module.ts
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { Error404Component } from './error404/error404.component';
import { RouterModule } from '@angular/router';
@NgModule({
declarations: [Error404Component],
imports: [
CommonModule,
RouterModule,
]
})
export class ErrorsModule { }