The bellow http interceptor fails to append the headers with the Authorization header nut it is succesfully adding the ‘x-test-header’ one

@Injectable()
export class AuthInterceptor implements HttpInterceptor {
  constructor(public authenticationService: AuthenticationService) {}

  intercept(request: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {

    let token = this.authenticationService.getToken();

    request = request.clone({
      setHeaders: {
        Authorization: `Bearer ${token}`,
        'x-test-header': 'foobar'
      }      
    });

    return next.handle(request);
  }
}

The token retunred by the AuthenticationService exists (I can see with Console.log) although I also tried to hard-type the value but it still missing