Angular RouterModule not woking in production

I have troubles getting my app working in production environment.

My app uses angular-jwt from @auth0/angular-jwt

If an user has an valid token, he will be forwarded to the MainScreenComponent, elsewhere he will be redirected to the login page.

import { AuthGuard } from './services/Authentication/auth-guard.service';
import { AuthGuardLogin } from './services/Authentication/auth-guard-login.service';
import { AuthService } from './services/Authentication/auth.service';
import { BrowserModule , HAMMER_GESTURE_CONFIG} from '@angular/platform-browser';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';
import { NgModule } from '@angular/core';

import { RouterModule } from '@angular/router';
import { LoginComponent } from './components/login/login.component';
import { NotFoundComponent } from './components/not-found/not-found.component';
import { NoAccessComponent } from './components/no-access/no-access.component';
import { AppComponent } from './app.component';
import { environment } from '../environments/environment';
import { ServiceWorkerModule } from '@angular/service-worker';
import { MainScreenComponent } from './components/main-screen/main-screen.component';
import { JwtModule } from '@auth0/angular-jwt';

export function tokenGetter() {
  return localStorage.getItem('token');
}

@NgModule({
  declarations: [
    AppComponent,
    LoginComponent,
    NotFoundComponent,
    NoAccessComponent,
    MainScreenComponent
  ],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    HttpClientModule,
    FormsModule,
    ReactiveFormsModule,
    ServiceWorkerModule.register('ngsw-worker.js', { enabled: environment.production }),
    RouterModule.forRoot([
       { path: '', component: MainScreenComponent , canActivate: [AuthGuard]},
       { path: 'login', component: LoginComponent,  canActivate: [AuthGuardLogin] },
       { path: '**', component: NotFoundComponent }
     ]),
     JwtModule.forRoot({
      config: {
        tokenGetter: tokenGetter,
        whitelistedDomains: environment.whiteListDomains,
      }
    })
  ],
  providers: [
  AuthService,
  AuthGuard,
  AuthGuardLogin,
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

if I use ng serve everything works like expected, but after ng build --prod, I get an 404 if my initial URL is https://my-site:4300/login. In this case the RouterModule settings will be ignored.

If I type in https://my-site:4300, I will be redirected to https://my-site:4300/login and the login page will be displayed.

Any ideas?

Best regards!

from Angular RouterModule not woking in production