title: IO Exception When Generating Signed APK
body: <p>I am trying to create signed APK an android,however I am getting IOException..
  Exception is shown below..</p>
  
  <pre><code>Warning:io.realm.processor.RealmProcessor: can't find referenced class javax.lang.model.element.Element
  Warning:Exception while processing task java.io.IOException: Please correct the above warnings first.
  :app:transformClassesAndResourcesWithProguardForRelease FAILED
  Error:Execution failed for task ':app:transformClassesAndResourcesWithProguardForRelease'.
  &gt; java.io.IOException: Please correct the above warnings first.
  </code></pre>