NullPointerException

this is error:
java.lang.NullPointerException: Attempt to read from field 'int android.graphics.Bitmap$Config.nativeInt' on a null object reference
at android.graphics.Bitmap.copy(Bitmap.java:583)
at com.theartofdev.edmodo.cropper.BitmapUtils.cropBitmapObjectWithScale(BitmapUtils.java:215)
at com.theartofdev.edmodo.cropper.BitmapUtils.cropBitmapObjectHandleOOM(BitmapUtils.java:155)
at com.theartofdev.edmodo.cropper.CropImageView.getCroppedImage(CropImageView.java:790)
at com.theartofdev.edmodo.cropper.CropImageView.getCroppedImage(CropImageView.java:737)
at com.duowan.makefriends.photo.BasePhotoActivity.completeCrop(BasePhotoActivity.java:132)
at com.duowan.makefriends.photo.BasePhotoActivity.access$100(BasePhotoActivity.java:25)
at com.duowan.makefriends.photo.BasePhotoActivity$2.onClick(BasePhotoActivity.java:121)
at android.view.View.performClick(View.java:5231)
at android.view.View$PerformClick.run(View.java:21240)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:179)
at android.app.ActivityThread.main(ActivityThread.java:5769)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:674)

and my code is:

cropImageView.setVisibility(View.VISIBLE);
cropImageView.setImageBitmap(result);
cropImageView.setAspectRatio(1, 1);
cropImageView.setFixedAspectRatio(true);
if (photoController.getRotate() > 0) {
cropImageView.rotateImage(photoController.getRotate());
}