java.lang.NullPointerException

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    • java.lang.NullPointerException: Attempt to invoke interface method 'com.owncloud.android.datamodel.FileDataStorageManager com.owncloud.android.ui.fragment.FileFragment$ContainerActivity.getStorageManager()' on a null object reference at com.owncloud.android.ui.fragment.OCFileListFragment.isGridViewPreferred(OCFileListFragment.java:790) at com.owncloud.android.ui.fragment.OCFileListFragment.changeGridIcon(OCFileListFragment.java:835) at com.owncloud.android.ui.fragment.OCFileListFragment.onPrepareOptionsMenu(OCFileListFragment.java:402) at android.support.v4.app.Fragment.performPrepareOptionsMenu(Fragment.java:2058) at android.support.v4.app.FragmentManagerImpl.dispatchPrepareOptionsMenu(FragmentManager.java:2145) at android.support.v4.app.FragmentController.dispatchPrepareOptionsMenu(FragmentController.java:282) at android.support.v4.app.FragmentActivity.onPreparePanel(FragmentActivity.java:477) at android.support.v7.view.WindowCallbackWrapper.onPreparePanel(WindowCallbackWrapper.java:90) at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.onPreparePanel(AppCompatDelegateImplBase.java:268) at android.support.v7.view.WindowCallbackWrapper.onPreparePanel(WindowCallbackWrapper.java:90) at android.support.v7.app.ToolbarActionBar$ToolbarCallbackWrapper.onPreparePanel(ToolbarActionBar.java:550) at android.support.v7.app.ToolbarActionBar.populateOptionsMenu(ToolbarActionBar.java:443) at android.support.v7.app.ToolbarActionBar$1.run(ToolbarActionBar.java:60) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5466) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
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