为什么我的谷歌分析电子商务转账没有注册?

我已经在我的分析页面上配置了电子商务(非常基本),我正在尝试发送基于 this .

当事务完成时,在我的浏览器上呈现的代码如下所示:

头:(玉)

script(async='', src='https://www.googletagmanager.com/gtag/js?id=UA-XXXX-1')
script.
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments)};
  gtag('js', new Date());
  gtag('config', 'UA-XXXX-1');

车身,再向下

var order = {
  "_id":"59e3cf363095221100edb909",
  "frete":{"frete":1350},
  "payment":{
    "Payment":{
      "Amount":5550
    }
  },
  "products":[
    {"product":{
      "_id":"58eb9dfb147a3b1a000e0d9c",
      "price":4200,
      "category":"58988fd4b2ae511a00eff884",
      "name":"CAIXA DE TRUFAS"
    },
    "quantity":1
    }]
  };

var itens = [];

var product
var item;
for(var i  = 0; i < order.products.length; i ++){
  product = order.products[i].product
  item = {
    "id": product['_id'],
    "name": product.name,
    "category": product.category.name,
    "quantity": order.products[i].quantity,
    "price": product.price / 100
  }
  itens.push(item);
}

gtag('event', 'purchase', {
  "transaction_id": order['_id'],
  "affiliation": "Frutacor",
  "value": order.payment.Payment.Amount / 100,
  "currency": "BRL",
  "shipping": order.frete.frete / 100,
  "items": itens
});

问题是,我的分析页面上什么都没有显示,我也不知道为什么。在研究它时,我遇到了一些关于analytics、ga、Google Tag Manager(GTM)和新的gtag的事情。js,这是我正在使用的