Bitmap Compress Getting null after taking picture and save into server

Question

Im trying to save my picture after taking photos from default camera and store it into server.

But after i succeed set the bitmap into the imageview, and then i press the button to store the photo into server, the error is occured :

Attempt to invoke virtual method 'boolean android.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference

This is my code overall :

@Override
protected void onCreate(Bundle savedInstanceState) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(intent, 0);

    cmdSelesai.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            bm = BitmapFactory.decodeFile(picturePath);
            ByteArrayOutputStream bao = new ByteArrayOutputStream();
            bm.compress(Bitmap.CompressFormat.JPEG, 50, bao);  <--- This line is error
            byte[] ba = bao.toByteArray();
            ba1 = Base64.encodeToString(ba, Base64.NO_WRAP);
            new uploadToServer().execute();
        }
    });

OnActivityResult :

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 1888 && data != null)
        {
            selectedImage = data.getData();
            photo = (Bitmap) data.getExtras().get("data");
            String[] filePathColumn = {MediaStore.Images.Media.DATA};
            Cursor cursor = getContentResolver().query(selectedImage,
                    filePathColumn, null, null, null);
            cursor.moveToFirst();

            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
            picturePath = cursor.getString(columnIndex);
            cursor.close();

            imageView.setImageBitmap(photo);
        }
        else if (data == null)
        {
            Toast.makeText(getApplicationContext(), "Batal mengambil gambar", Toast.LENGTH_SHORT).show();
        }
        else
        {
            Bitmap bp = (Bitmap) data.getExtras().get("data");
            imageView.setImageBitmap(bp);
        }
    }

OnSaveInstance and OnRestoreInstance :

@Override
    public void onSaveInstanceState(Bundle savedInstanceState) {
        savedInstanceState.putString("order", order);
        savedInstanceState.putString("shipment", shipment);
        savedInstanceState.putString("penerima", penerima);
        savedInstanceState.putString("kode_driver", kode_driver);
        savedInstanceState.putString("picturePath", picturePath);
        savedInstanceState.putStringArray("kode_produk", kode_prdct_temp);
        savedInstanceState.putParcelable("selectedImage", selectedImage);
        savedInstanceState.putParcelable("bm", photo);
        savedInstanceState.putParcelable("photo", photo);
        savedInstanceState.putSerializable("myMap2", (Serializable) myMap2);
        savedInstanceState.putSerializable("mapAlasanReal", (Serializable) mapAlasanReal);
        // etc.
        super.onSaveInstanceState(savedInstanceState);
    }

    @Override
    public void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
        order = savedInstanceState.getString("order");
        kode_driver = savedInstanceState.getString("koder_driver");
        shipment = savedInstanceState.getString("shipment");
        penerima = savedInstanceState.getString("penerima");
        picturePath = savedInstanceState.getString("picturePath");
        bm = savedInstanceState.getParcelable("bm");
        photo = savedInstanceState.getParcelable("photo");
        kode_prdct_temp = savedInstanceState.getStringArray("kode_produk");
        selectedImage = savedInstanceState.getParcelable("selectedImage");
        myMap2 = (Map<Integer, Integer>) savedInstanceState.getSerializable("myMap2");
        mapAlasanReal = (Map<Integer, Integer>) savedInstanceState.getSerializable("mapAlasanReal");
    }

Please help me !

EDITED :

This is my permissions :

<uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-feature android:name="android.hardware.camera" />
    <uses-feature android:name="android.hardware.camera.autofocus" />