vue3 vuedraggable draggable element must have an item slot

vue3+vite
看官网使用这种<template #item=“{ element }”>

<draggablev-model="myArray"@start="onStart"@end="onEnd":sort="false"item-key="id"draggable=".item"handle=".mover"
><template #item="{ element }"><div> {{ element.name }} </div></template>
</draggable>

实战可看这篇