In an android app,I am trying to download 1 image which is stored in Kinvey backend (not uploading though). But if I try to fetch that image, it is giving , com.kinvey.java.core.KinveyJsonResponseException: BlobNotFound this exception. As I can see in my storage path of device, image is corrupted. Below is the code I've used for downloading a file,

private void checkImage(String imageId, final ImageView imageView) throws IOException {
    if (imageId == null) {
        return;
    }
    final File outputDirectory = new File(Environment.getExternalStorageDirectory() + Constants.IMAGE_DIRECTORY);
    if (!outputDirectory.exists()) {
        outputDirectory.mkdirs();
    }
    final File outputFile = new File(Environment.getExternalStorageDirectory() + Constants.IMAGE_DIRECTORY + "/" + imageId + Constants.IMAGE_EXTENSION);
    Log.i("TAG", "outputFile == " + outputFile);
    if (!outputFile.exists()) {
        outputFile.createNewFile();
    }
    final FileOutputStream fos = new FileOutputStream(outputFile);
    FileMetaData fileMetaDataForDownload = new FileMetaData(imageId);

    App.getKinveyClient().file().download(fileMetaDataForDownload, fos, new DownloaderProgressListener() {
        @Override
        public void onSuccess(Void args) {
            try {
                fos.write(outputFile.getAbsolutePath().getBytes());
                imageView.setImageBitmap(BitmapFactory.decodeFile(outputFile.getAbsolutePath()));
                //Toast.makeText(getApplication(), R.string.toast_successful, Toast.LENGTH_SHORT).show();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        @Override
        public void onFailure(Throwable throwable) {
           // Toast.makeText(getApplication(), R.string.toast_unsuccessful, Toast.LENGTH_SHORT).show();
            Log.d(TAG, "throwable == "+throwable.toString());
        }

        @Override
        public void progressChanged(MediaHttpDownloader mediaHttpDownloader) throws IOException {
            //Log.d(TAG, "progressChanged");
        }

}); 

It would be great if anybody could tell me cause of this. Thank you in advance.