How to handle errors in Mongoose optimally

Question

I am starting to work with Mongodb + Mongoose and I am having problems dealing with the mistakes that Mongoose generates. One of the same is when there is a duplicate key for a parameter that should be unique. Ex:

Model (Usuariomodel)

const mongoose = require('mongoose');
const UsuarioSchema = new mongoose.Schema({
    email: {type: String,required: true,index: true},
    senha: {type: String,required: true},
    nome: { type: String, required: true}
});
const UsuarioModel = mongoose.model('Usuario', UsuarioSchema, 'Usuario');    

module.exports = UsuarioModel;

Using this model, Mongoose will not be able to save new documents that have the email repeated. This I could already understand, make work and see the answer within my application. Ex:

Code that saves the user on the Expressjs route (POST)

UsuarioRoute.post('/', (req, res) => {
    let Usuario = new UsuarioModel(req.body);
    Usuario.save((err, Usuario) => {
        err ? res.status(400).send(err) : res.send('ok.');
    });
});

My problem is that when an error occurs (such as trying to save where email already exists, Mongoose does not bring me this in a friendly way. The message I received in the variable err of the above code was that:

{
    "code":11000,
    "index":0,
    "errmsg":"E11000 duplicate key error collection: foo.Usuario index: email_1 dup key: { : \"[email protected]\" }",
    "op":{
        "email":"[email protected]",
        "nome":"foo",
        "senha":"123",
    }
}

Is there a more "friendly" way for me to understand this mistake? the only way I thought was to do a specific treatment based on the parameter code from JSON that Mongoose returned me but so I would have to make a micro-library only error handling... It’s really the only way to treat it?