title: Gradle sync failed with Android Studio 3.1: Uninitialized object exists on backward branch 70
body: <p>After Updating Android Studio from 3.0 to 3.1 My project gradle syncing failed with the following error.  </p>
  
  <pre><code>Gradle sync failed: Uninitialized object exists on backward branch 70 Exception Details: Location: 
  com/android/build/gradle/tasks/BuildArtifactReportTask.newArtifact(Lcom/android/build/api/artifact/BuildableArtifact;)
  Lcom/android/build/gradle/tasks/BuildArtifactReportTask$BuildableArtifactData;
  </code></pre>