遇到个问题，就是在vue中，如果数据是数组里面包含对象，结构如下
data() {

return {
  comment: {},
  commodity: {},
  versions: [
    {
      version: "全网通版 4GB+64GB",
      price: "1599元"
    },
    {
      version: "全网通版 4GB+64GB",
      price: "1599元"
    },
    {
      version: "全网通版 4GB+64GB",
      price: "1599元"
    }
  ]
};

在插值的时候用{{versions[0].version}}这种形式就会出警告
[Vue warn]: Error in render: "TypeError: Cannot read property 'version' of undefined"
TypeError: Cannot read property 'version' of undefined
at Proxy.render (eval at ./node_modules/vue-loader/lib/template-compiler/index.js?{"id":"data-v-10009f89","hasScoped":true,"buble":{"transforms":{}}}!./node_modules/vue-loader/lib/selector.js?type=template&index=0!./src/views/Commodity.vue (app.js:1454), <anonymous>:31:51)

但是数据能正常渲染出来，就是看到红字就难受
想知道是什么原因造成的！求大神解惑