Callable functions with custom region not working, Unauthenticated error

Überprüfe die Definition der aufrufbaren Funktion, app.module.ts, firebase.json und die Angular-Komponente, die httpsCallableData verwendet, und vergleiche dabei die konfigurierte Region europe-west1 mit der bereitgestellten Produktionsumgebung. Reproduziere den Produktionsaufruf und verfolge, warum er Unauthenticated zurückgibt; abgeschlossen ist die Aufgabe, wenn die bereitgestellte V1-aufrufbare Funktion aus der Angular-Anwendung ohne diesen Fehler funktioniert.

Version info

Angular:
15.2.2

Firebase:
9.23.0

AngularFire:
7.6.1

How to reproduce these conditions

Steps to set up and reproduce

1. Create angular 15 project
2. Add angularfire
3. Create callable functions with custom region

Debug output

** Errors in the JavaScript console **

main.fc6d01fc3332ae31.js:1 ERROR Error: Uncaught (in promise): Error: FirebaseError: Unauthenticated
Error: FirebaseError: Unauthenticated

** Output from firebase.database().enableLogging(true); **

How/where do I enable this?

Callable function:

import { region } from 'firebase-functions';

export const getInvoicesPerQuarter= region('europe-west1')
  .https.onCall(async (data: { id: string; invoiceNumber: string }, context) => {
...
})

app.module.ts:

   provideFunctions(() => {
      const functions = getFunctions(getApp(), 'europe-west1');
      // const functions = getFunctions();
      if (environment.useEmulators) {
        connectFunctionsEmulator(functions, 'localhost', 5001);
      }
      return functions;
    }),

firebase.json:

{
  "hosting": [
    {
      "rewrites": [
        {
          "source": "/getInvoicesPerQuarter",
          "function": "getInvoicesPerQuarter"
        }
      ]
    },

angular component:

import { Functions, httpsCallableData } from '@angular/fire/functions';

 const getInvoicesPerQuarterCallable: (data: {
          year: number;
          quarter: number;
        }) => Observable<string> = httpsCallableData<
          { year: number; quarter: number },
          string
        >(this.functions, 'getInvoicesPerQuarter');

        const result = await firstValueFrom(
          getInvoicesPerQuarterCallable({ year, quarter }),
        );

Calling this callable function works in the emulator.
I deploy this to firebase.
I doesn't work on production and I get the Unauthenticated error.
I already contacted firebase support but everything looks fine and they say it's an AngularFire issue and can't help me.
Functions are V1.