React Native OpenCV Face Recognition - reactjs

Question

I was already finished with the creation of a native module for the latest OpenCV for Android.
However, I am trying to access the haarcascade_frontalface_alt2.xml file using the file directory format below but it cannot be loaded.
Has anyone tried to create a react native module for OpenCV and was able to create face recognition using Java in React Native?
I am expecting to create a function in react native using OpenCV java that will have 2 base64 inputs and then do face matching then face recognition.
#ReactMethod
public void faceRecognition(String referenceBase64, String capturedBase64, Callback errorCallback, Callback successCallback) {
try {
//######## REGION FOR IMAGE CONVERTION ########
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = true;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
//reference base64 image convertion
byte[] decodedString_reference = Base64.decode(referenceBase64, Base64.DEFAULT);
Bitmap image_reference = BitmapFactory.decodeByteArray(decodedString_reference, 0, decodedString_reference.length);
//captured base64 image convertion
byte[] decodedString_captured = Base64.decode(capturedBase64, Base64.DEFAULT);
Bitmap image_captured = BitmapFactory.decodeByteArray(decodedString_captured, 0, decodedString_captured.length);
//######## REGION FOR FACE DETECTION ########
String response = "";
String filenameFaceCascade = "D://React-Native//FaceRecognition_v2//android//app//src//main//java/com//reactlibrary//haarcascade_frontalface_alt2.xml";
CascadeClassifier classifier = new CascadeClassifier();
if (!classifier.load(filenameFaceCascade))
{
response = "Error"; //this is being returned for the success callback. The plan is that it should return a response of "Test_only"
}
else
{
response = "Test_only";
}
successCallback.invoke(response);
} catch (Exception e) {
errorCallback.invoke(e.getMessage());
}
}