Angular Fire - No Provider for InjectionToken (angularfire2.app.options)

Context


I am working with Ionic & Angular & Angular Fire & Firebase. I already made a successfull connection to the Firestore Database and I am able to manipulate the data.

Specifications


Ionic CLI : 6.18.1
Ionic Framework : @ionic/angular 6.0.11
@angular-devkit/build-angular : 13.2.6
@angular-devkit/schematics : 13.2.6
@angular/cli : 13.2.6
@ionic/angular-toolkit : 6.1.0
@angular/angularfire : 7.2.1

Implementations


App.module.ts

import { environment } from '../environments/environment';
import { initializeApp, provideFirebaseApp } from '@angular/fire/app';
import { provideAuth, getAuth } from '@angular/fire/auth';
import { provideFirestore, getFirestore } from '@angular/fire/firestore';

@NgModule({
...
imports: [
...
provideFirebaseApp(
() => initializeApp(environment.firebaseConfig)),
provideAuth(() => getAuth()),
provideFirestore(() => getFirestore(),
),
],
...
})


Now I am working on the integrattion of Google Authentication. For that I have been following the Angular Fire Repository and of course the Angular Fire - Authentication Documentation. Where's an abbreviated look of what's implemented (just like the docs):

Login.page.ts

import { AuthenticationService } from 'src/app/services/authentication.service';

export class LoginPage implements OnInit {

constructor(private authenticationSvc: AuthenticationService) { }

login() { this.authenticationSvc.login(); }
}


Authentication.service.ts

import { AngularFireAuth } from '@angular/fire/compat/auth';
import firebase from 'firebase/compat/app';

export class AuthenticationService {

constructor(private auth: AngularFireAuth) { }

login() { this.auth.signInWithPopup(new firebase.auth.GoogleAuthProvider()); }
}

Problem


Simply put if I use the Authentication.service.ts on the Login.page.ts the application doesn't work anymore. The browser console outputs the following error:

ERROR Error: Uncaught (in promise): NullInjectorError: R3InjectorError(LoginPageModule)[AuthenticationService -> AuthenticationService -> AngularFireAuth -> InjectionToken angularfire2.app.options -> InjectionToken angularfire2.app.options -> InjectionToken angularfire2.app.options]:
NullInjectorError: No provider for InjectionToken angularfire2.app.options!
NullInjectorError: R3InjectorError(LoginPageModule)[AuthenticationService -> AuthenticationService -> AngularFireAuth -> InjectionToken angularfire2.app.options -> InjectionToken angularfire2.app.options -> InjectionToken angularfire2.app.options]:
NullInjectorError: No provider for InjectionToken angularfire2.app.options!
at NullInjector.get (core.mjs:11120:1)
at R3Injector.get (core.mjs:11287:1)
at R3Injector.get (core.mjs:11287:1)
at R3Injector.get (core.mjs:11287:1)
at injectInjectorOnly (core.mjs:4765:1)
at Module.ɵɵinject (core.mjs:4769:1)
at Object.AngularFireAuth_Factory [as factory] (angular-fire-compat-auth.js:126:1)
at R3Injector.hydrate (core.mjs:11457:1)
at R3Injector.get (core.mjs:11276:1)
at injectInjectorOnly (core.mjs:4765:1)
at resolvePromise (zone.js:1262:1)
at resolvePromise (zone.js:1216:1)
at zone.js:1329:1
at _ZoneDelegate.push.6084._ZoneDelegate.invokeTask (zone.js:443:1)
at Object.onInvokeTask (core.mjs:25535:1)
at _ZoneDelegate.push.6084._ZoneDelegate.invokeTask (zone.js:442:1)
at Zone.push.6084.Zone.runTask (zone.js:214:1)
at drainMicroTaskQueue (zone.js:632:1)

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