title: Google Admob Interstitial Add Crash IOS Swift
body: <p>I have implemented google admob in my IOS app.All other adds are working e.g Banner,Native. Interstitial add is also working fine with test id during debugging mode.But when I replaced test key with actual key I got below crash on crashlytics
  <a href="https://i.stack.imgur.com/odxEn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/odxEn.png" alt="enter image description here" /></a></p>
  <pre><code>GADInterstitial.m line 306
  __49-[GADInterstitial presentFromRootViewController:]_block_invoke
  </code></pre>
  <p>I have crosschecked keys and code from official google site.Below is the code I am using</p>
  <pre><code>     interstitial = GADInterstitial(adUnitID: &quot;ca-app-pub-.....&quot;) //test
          interstitial.delegate = self
          let request = GADRequest()
          interstitial.load(request)
  if interstitial.isReady {
             interstitial.present(fromRootViewController: self)
           } else {
             print(&quot;Ad wasn't ready&quot;)
           }
  </code></pre>