如何在SPA中使用Google-DFA(Google-Publisher-Tag)?

第一次广告显示良好,但第二次它给出空错误。

OnInit 方法:

addGoogleAd() {
  const googletag: any = window['googletag'] || {};

  if (window['googletag'] && googletag.apiReady) {
    googletag.cmd = googletag.cmd || [];

    googletag.cmd.push(() => {
      googletag.pubads().setTargeting('site', 'weatherinnovations');
      googletag.pubads().enableSingleRequest();

      googletag.defineSlot('/xx/weather_innovations', [[160, 600]], 'div-gpt-ad-xx-1')
        .setTargeting('position', ['s1']).addService(googletag.pubads());
      googletag.defineSlot('/xx/weather_innovations', [[300, 250]], 'div-gpt-ad-xx-2')
        .setTargeting('position', ['s2']).addService(googletag.pubads());
      googletag.defineSlot('/xx/weather_innovations', [[300, 250]], 'div-gpt-ad-xx-3')
        .setTargeting('position', ['s3']).addService(googletag.pubads());
      googletag.defineSlot('/76643716/weather_innovations', [[728, 90]], 'div-gpt-ad-xx-4')
        .setTargeting('position', ['s4']).addService(googletag.pubads());
      googletag.defineSlot('/xx/weather_innovations', [[728, 90]], 'div-gpt-ad-xx-5')
        .setTargeting('position', ['s5']).addService(googletag.pubads());

      googletag.pubads().collapseEmptyDivs(true, true);
      googletag.enableServices();
    });
    googletag.display(this.id);
  }
}

仪表板加载并显示ad,但当我从另一个组件返回时,它会给出以下错误:

读取属性“setTargeting”为null

我安慰孩子们 googletag 并且不是空的,并且具有相同的内容。