title: FB Ads Error Code: -1 Unknown error - Android Interstitial
body: <p>I´ve displayed Facebook ads before but today the Interstitial ads stopped working, we I try the debug mode I get an error with code -1 and name Unknown error.</p>
  
  <p>I'm using the following code:</p>
  
  <pre><code>fbInterstitialAd =new com.facebook.ads.InterstitialAd(mContext,id_facebook);
      fbInterstitialAd.setAdListener(new InterstitialAdListener() {
          @Override
          public void onInterstitialDisplayed(Ad ad) {
  
          }
  
          @Override
          public void onInterstitialDismissed(Ad ad) {
              adDismissed.run();
          }
  
          @Override
          public void onError(Ad ad, AdError adError) {
              Log.d("FBads",adError.getErrorMessage());
          }
  
          @Override
          public void onAdLoaded(Ad ad) {
              adLoaded.run();
          }
  
          @Override
          public void onAdClicked(Ad ad) {
              adClickedCallback.run();
          }
      });
      fbInterstitialAd.loadAd();
  </code></pre>