Mongoose Encryption Encrypts Both Fields. What Do I Do?

const adminsSchema = new mongoose.Schema({
    username: String,
    password: String,
});

const secret = "Thinkyoucancrackthisone";
adminsSchema.plugin(encrypt, {
    secret: secret,
    encryptedFields: ["password"]
});
const Admin = new mongoose.model("Admin", adminsSchema);

app.post("/register", function (req, res) {
    const user = new Admin({
        username: req.body.user,
        password: req.body.pass
    });
    user.save(function (err) {
        if (err) {
            res.send(err);
        } else {
            res.send("Admin creds added successfully");
        }
    });
});

So instead of getting 5 fields Im getting 4 fields with no username field

I tried different for different typos, different methods like excludefromencryption but it didnot work. I even tried dropping the collection starting anew.