Component inside ＜Transition＞ renders non-element root node that cannot be animated

报错：Component inside renders non-element root node that cannot be animated

环境：nuxt
原因：根节点写了多个，错误代码如下：

<template>
  <div></div>
  <div></div>
</template>

解决：用一个<div>包起来，代码如下：

<template>
  <div></div>
</template>

同时可能出现报错：does not have a single root node and will cause errors when navigating between routes.