[Vue warn]: <transition-group> children must be keyed: <ElTag>

记录今天遇到的bug
解决方法，一个网友说的是

我试了，不行，然后在他的评论里面看到一个人回复的

这个是可以的，我用了很多v-if和v-else，所以加了key就解决了问题，下面是我加的

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