Uncaught (in promise): Error: Cannot match any routes (Angular8)

Question

I maked my angular-app. All good works. But for deploy to server I getting error:

Uncaught (in promise): Error: Cannot match any routes. URL Segment: 'myUrl/app.aspx'

After build prod my app doesn't work either (I set base href and all files load, but I getting warning Unhandled Navigation Error).

I make difficult routing for my app. I using submodules for routing. And I think the problem related with APP_BASE_HREF or wrong routing for my app/submodules.

My example:

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { HttpClientModule } from "@angular/common/http";
import { AppComponent } from './app.component';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { NbThemeModule, NbLayoutModule, NbSidebarModule, NbButtonModule, NbTabsetModule, NbCardModule } from '@nebular/theme';
import { NbEvaIconsModule } from '@nebular/eva-icons';
import { AppRoutingModule } from './app-routing.module';
import { RouterModule } from '@angular/router';
import { MainModule } from './components/main/main.module';
import { AddModule } from './components/add/add.module';
import { APP_BASE_HREF } from '@angular/common';

@NgModule({
  declarations: [
    AppComponent,
  ],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    NbThemeModule.forRoot({ name: 'default' }),
    NbLayoutModule,
    NbEvaIconsModule,
    NbSidebarModule.forRoot(),
    NbButtonModule,
    NbTabsetModule,
    NbCardModule,
    AppRoutingModule,
    MainModule,
    AddModule,
    HttpClientModule,
  ],
  providers: [{ provide: APP_BASE_HREF, useValue: '/' }],
  bootstrap: [AppComponent]
})
export class AppModule { }

I don't have providers: [{ provide: APP_BASE_HREF, useValue: '/' }] and all good works. But for deploy I geted error message:

Please provide a value for the APP_BASE_HREF token or add a base element to the document.

I add APP_BASE_HREF and error disappeared.

app-routing.module.ts

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

const routes: Routes = [
  {
    path: '',
    loadChildren: './components/main/main.module#MainModule'
  },
  {
    path: 'event',
    loadChildren: './components/event/event.module#EventModule'
  },
  {
    path: 'add',
    loadChildren: './components/add/add.module#AddModule'
  },
  {
    path: 'archive',
    loadChildren: './components/archive/archive.module#ArchiveModule'
  }
];

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

main-routing.module.ts

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { ViewEventsComponent } from './view-events/view-events.component';

const routes: Routes = [
    {
        path: '',
        component: ViewEventsComponent,
    },
];

@NgModule({
    imports: [RouterModule.forChild(routes)],
    exports: [RouterModule]
})
export class MainRoutingModule { }

event-routing.module.ts

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { EventPageComponent } from './event-page/event-page.component';

const routes: Routes = [
    {
        path: ':id',
        component: EventPageComponent,
    },
];

@NgModule({
    imports: [RouterModule.forChild(routes)],
    exports: [RouterModule]
})
export class EventRoutingModule { }

And I noticed:

after build app - generated files of module: archive and event, but don't generated file for main-module.

Answer 1

I solved this problem with fixed in app-routing.module.ts. A added { useHash: true }:

@NgModule({
  imports: [RouterModule.forRoot(routes, { useHash: true })],
  exports: [RouterModule],
})