title: Mapbox failed to read the storage key
body: <p>I have the storage key but mapbox is still saying </p>
  
  <pre><code>E/Mbgl-FileSource: Failed to read the storage key: 
                     java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.os.Bundle.getBoolean(java.lang.String, boolean)' on a null object reference
                         at com.mapbox.mapboxsdk.storage.FileSource.getCachePath(FileSource.java:88)
                         at com.mapbox.mapboxsdk.storage.FileSource$FileDirsPathsTask.doInBackground(FileSource.java:165)
                         at com.mapbox.mapboxsdk.storage.FileSource$FileDirsPathsTask.doInBackground(FileSource.java:155)
                         at android.os.AsyncTask$2.call(AsyncTask.java:292)
                         at java.util.concurrent.FutureTask.run(FutureTask.java:237)
                         at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
                         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
                         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
                         at java.lang.Thread.run(Thread.java:818)
  </code></pre>
  
  <p>I also get the error when calling <code>MapView.onStart()</code>.</p>
  
  <p>Is it because Im using free token?</p>
  
  <p>Also, My key is being printed when calling <code>Log.d("app", Mapbox.getAccessToken());</code></p>
  
  <p>My other problem is that when I starting the navigation using this code:</p>
  
  <pre><code>NavigationLauncherOptions options = NavigationLauncherOptions.builder().origin(origin).destination(dest).shouldSimulateRoute(true).build();
          NavigationLauncher.startNavigation(this, options);
  </code></pre>
  
  <p>The map in Navigation won't show, Its just a blue blank background with its UI, maybe its because the key cannot be read. But it can't be a reason because <code>Mapbox.getAccessToken()</code> is returning my correct token. I am really confused now.</p>