title: Could not get unknown property 'defaultCompileSdkVersion' for project ':app' of type org.gradle.api.Project
body: <p>I keep getting this error in the app project on my Application.</p>
  <pre><code>// Set property defaults after extension .gradle files.
      
      ext.cdvCompileSdkVersion = cdvCompileSdkVersion == null ? (
          defaultCompileSdkVersion == null
              ? privateHelpers.getProjectTarget()
              : defaultCompileSdkVersion
      ) : Integer.parseInt('' + cdvCompileSdkVersion)
  </code></pre>