当我向 firebase 添加数据时，它会更新旧数据而不是写入新数据

Question

private fun addToFavs() {
    val myFirebaseRef = FirebaseDatabase.getInstance().reference

    val newData=myFirebaseRef!!.child(AppConstants.FirebaseNodes.userNode).child(auth.currentUser!!.uid).child("fav").child(
        business.id).child("id").push()
   newData.setValue(business.id)
        .addOnCompleteListener { task: Task<Void?> ->
            if (task.isSuccessful) {
                Log.d(TAG, "added to fav")
            } else {

                Log.e(TAG, "Error getting data", task.exception)
                Toast.makeText(activity, "Error " + task.exception, Toast.LENGTH_SHORT).show()
            }
        }


}

{
    "TTmr8YNOaIQ6ZlJlHw2sONOLCz72": {
        "email": "arfaatqureshi232@hotmail.com",
        "fcmToken": "fv-otj0pR6OnSUNY2buZtb:APA91bGEBV80jo-SnJBHfJ6MxSXj0gLfvV9BKxX2SOmHstvLbUpRB0oxmSWRsfRsCJEnJ-D77UTbhRIFv8cUQEozA68_wOeYm5es7klErvfi96Huez7KWsK5FrBfAmf2J-9ZqNhGvV5a",
        "followingStores": {
            "oGURUwXDgmgiXggcrnRAcNj0AMs1": {
                "id": "oGURUwXDgmgiXggcrnRAcNj0AMs1"
            }
        },
        "id": "TTmr8YNOaIQ6ZlJlHw2sONOLCz72",
        "isOnline": true,
        "lat": 0,
        "lng": 5,
        "mobileNo": "034396524876",
        "name": "a.qureshi",
        "online": true
    }
}