I have the following code, using the http client from Angular:

private fetch(): Observable<number> {
  return this.http.get('myUrl')
    .pipe(catchError((err) => of(0))),
  );
}

fetchAll(): Observable<number> {
  const fakeArray = [1,2];
  return forkJoin(fakeArray.map(() => this.fetch()))
}

fetchAll is then subscribed via | async by a component

The purpose is to have a fallback to 0 whenever one of the call fails. However, it doesn’t work. I know that angular httpclient doesn’t complete when an error occurs. Is there any way I could work around that to achieve my fallback ?