vue 使用vant van-dialog 报缺少name

<template>
<div>
    <van-dialog v-model:show="show" title="标题" show-cancel-button>
      <img src="https://fastly.jsdelivr.net/npm/@vant/assets/apple-3.jpeg" />
    </van-dialog>
</div>
</template>
<script>
    import {Dialog} from  'vant'
    import  'vant/lib/index.css'
    export  default {
    name:  "Register",
    components: {
    "van-dialog":  Dialog.Component, //加上这个
    },
    ...
</script>