我正在尝试从 JSON 中的对象数组中获取第二个 [1] 项目的标题：

{
    "@attributes": {
        "version": "2.0"
    },
    "channel": {
        "title": "Rust News",
        "description": "The latest news posts from Rust",
        "lastBuildDate": "Thu, 07 Jul 2022 07:00:00 Z",
        "item": [
            {
                "guid": "https:\/\/rust.facepunch.com\/news\/july-2022-update\/",
                "link": "https:\/\/rust.facepunch.com\/news\/july-2022-update\/",
                "title": "July Update",
                "description": "<img src=\"https:\/\/files.facepunch.com\/paddy\/20220705\/july_2022_header.jpg\"><br\/>Combat balance, faster load times, chat filter and much more!\u00a0\u00a0",
                "pubDate": "Thu, 07 Jul 2022 07:00:00 Z"
            },
            {
                "guid": "https:\/\/rust.facepunch.com\/news\/community-update-243\/",
                "link": "https:\/\/rust.facepunch.com\/news\/community-update-243\/",
                "title": "Community Update 243",
                "description": "<img src=\"https:\/\/files.facepunch.com\/errn\/1b1311b1\/FTTfqglWQAMxkzD.jpg\"><br\/>Custom desk mats, Mars monuments, thoughtful poetry, and more!",
                "pubDate": "Wed, 15 Jun 2022 12:00:00 Z"
            }
...

这是 axios 代码：

  mounted() {
    this.axios.get("./api/feedRust.php").then(response => {
        this.items = response.data.channel;
    });
  }

使用 response.data.channel 时一切正常，但由于此错误，无法从项目数组中获取任何对象：

Cannot read properties of undefined (reading '1')

HTML/Vuejs 代码：

<div>{{items.item[1].title}}<div>

这里可能出了什么问题？