Почему не могу получить rss через http.get?

Не могу получить rss сервиса через сервис:

import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs/Observable';

import { rssAPI } from '../../app.constants';

@Injectable()
export class RSSService {
  constructor(
    private http: HttpClient,
  ) {}

  public getRSS(): Observable<any> {
    return this.http.get('https://www.presseportal.de/rss/bau-immobilien.rss2');
  }
}

Получаю такую ошибку:

Failed to load https://www.presseportal.de/rss/bau-immobilien.rss2: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'localhost:4200' is therefore not allowed access.