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This is related to your micro SD if you save your photos on one.
Does the same occur with the photos in internal storage?
You have 2 cards?I think you should check if the same occurs with photos from internal storage.
Ok then,keep us updated.
Well,you might try to format your SD and try to move photos again and see how it goes.Before that,try this:settings-apps-all-media storage,force stop and clear data.Restart.