当我在vue.js中单击review order作为前端，在后端单击ruby时，我需要帮助检索缺少的渲染图像。在添加到 checkout 列表之前，三个图像中只有一个渲染图像。我已经运行了chrome开发工具，在这段代码中，我看到缺少这些图像：

: ((upload = false), (preview_url = blank_url));
  this.reviewOrderDisabled = true;
  this.$store.commit("changeIfReorder", false);
  let user_id = this.$store.getters.id;
  this.saveDraftDisabled = true;
  this.selectedProduct.img_url = this.artwork_url;
  this.$store.commit("changeSelected", this.selectedProduct);
  MockupService.saveProductTemplate(
    this.productTemplate.id,
    this.layers,
    preview_url,
    this.artwork_url,
    this.previewImgObjs,
    upload,
    user_id,
    blank_url
  )
    .then((data) => {
      console.log(
        "data from product template save::: " + JSON.stringify(data)
      );
      this.saveDraftDisabled = false;
      this.save_success = true;
      this.save_msg =
        "This draft was saved to Product Templates in your Dashboard.";
      var layer = data.data.layers.layers[0];
      if (layer) {
        this.$store.commit("changeImgUrl", layer);
      }
      if (this.file.image) {
        window.location = "/product/checkout/null&isPaid=false";
      }
      // }
    })
    .catch((error) => {
      this.saveDraftDisabled = false;
      // this.error =
      //   "There was an error in saving your draft. Please try again later.";
    });
},
hide() {
  this.showModal = false;

如果有人能帮助我，我将不胜感激。提前谢谢