Private mode cant able to access after updating to marshmallow 6.0.1

I have updated my N910G marshmallow 6 to 6.0.1 using OTA update.after updation i cant able access the private mode.i can add fotos to private mode but cant able to view the fotos after entering private mode.
When i try to open the private mod, "after typing password it shows private mode symbol on top but nothing in gallery". Pls help

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