title: App Crashing after indegrating Audience Network Ads in Unity 2021.3.6f1
body: <p>i am getting this error when i play the game in editor after integrating Audience network Ads:</p>
  <pre><code>Exception: Field currentActivity or type signature  not found
  UnityEngine._AndroidJNIHelper.GetFieldID (System.IntPtr jclass, System.String fieldName, System.String signature, System.Boolean isStatic) (at &lt;9d0861ca66fe45e696ddf3e3a8d9ea41&gt;:0)
  UnityEngine.AndroidJNIHelper.GetFieldID (System.IntPtr javaClass, System.String fieldName, System.String signature, System.Boolean isStatic) (at &lt;9d0861ca66fe45e696ddf3e3a8d9ea41&gt;:0)
  UnityEngine._AndroidJNIHelper.GetFieldID[ReturnType] (System.IntPtr jclass, System.String fieldName, System.Boolean isStatic) (at &lt;9d0861ca66fe45e696ddf3e3a8d9ea41&gt;:0)
  UnityEngine.AndroidJNIHelper.GetFieldID[FieldType] (System.IntPtr jclass, System.String fieldName, System.Boolean isStatic) (at &lt;9d0861ca66fe45e696ddf3e3a8d9ea41&gt;:0)
  UnityEngine.AndroidJavaObject._GetStatic[FieldType] (System.String fieldName) (at &lt;9d0861ca66fe45e696ddf3e3a8d9ea41&gt;:0)
  UnityEngine.AndroidJavaObject.GetStatic[FieldType] (System.String fieldName) (at &lt;9d0861ca66fe45e696ddf3e3a8d9ea41&gt;:0)
  AudienceNetwork.AudienceNetworkAds.IsInitialized () (at Assets/AudienceNetwork/Library/AudienceNetworkAds.cs:33)
  AudienceNetwork.AudienceNetworkAds.Initialize () (at Assets/AudienceNetwork/Library/AudienceNetworkAds.cs:15)
  AudienceNetwork.AdView..ctor (System.String placementId, AudienceNetwork.AdSize size) (at Assets/AudienceNetwork/Library/AdView.cs:114)
  AdsManager.LoadBanner () (at Assets/Scripts/AdsManager.cs:27)
  AdsManager.Start () (at Assets/Scripts/AdsManager.cs:12)
  </code></pre>
  <p><a href="https://i.stack.imgur.com/bzTUJ.png" rel="nofollow noreferrer">Snreenshot</a></p>
  <p><a href="https://i.stack.imgur.com/HhGzA.png" rel="nofollow noreferrer">Screenshot</a></p>
  <p><a href="https://i.stack.imgur.com/HvcAl.png" rel="nofollow noreferrer">Screenshot</a></p>