Updating the path 'x' would create a conflict at 'x'

Working with Data Node.js Frameworks
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1

I am trying to update an embedded array document in a single function but I am getting an error:

Updating the path ‘x’ would create a conflict at ‘x’

My schema is

const AddressSchema = new Schema({
  city: {
    type: String,
    required: true,
  },
  isDefault: {
    type: Boolean,
    required: true,
  },
});

const UserSchema = new Schema(
  {
    username: {
      type: String,
    },
    addresses: [Address.schema],
  },
);

My goal is to add a new default address while updating the existing default address to false using this:

      User.findOneAndUpdate(
        { username: req.user.username },
        {
          $set: { "addresses.$[].isDefault": false },
          $push: { addresses: { city: "Example City",  isDefault: true } },
        },
        { new: true }
      )

What’s the other way around here. Thank you!