How to load SlicingOpLambda and TFOpLambda Layer in tfjs?

I’m trying to train a custom model for pose detection using MoveNet. For that, I need to normalise the landmarks or key points of the training data. The Keras and tf functions which are being used in python for normalizing are working fine but when I am loading that model in tfjs, the model is giving errors stating SlicingOpLambda and TFOpLambda Layer is undefined. If someone can help with this, please do.

Check https://github.com/tensorflow/tfjs/issues/4853#issuecomment-867946449