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14. 【Vue.jsエラー】Emitted value instead of an instance of Error

エラー内容

(Emitted value instead of an instance of Error)
  Error compiling template:

    ...

  - Component template should contain exactly one root element. If you are using v-if on multiple elements, use v-else-if to chain them instead.
 

 

発生条件/原因/対処法

<template>直下に複数タグがあると発生するエラー。(root elementは一つでなくてはならない)

以下、エラー例。

<template>

    <p>aaa</p>

    <p>bbb</p>

</template>

<template>直下に<p>が二つあるのでエラー。

 

以下の様に、ルートエレメントは一つでなくてはならない。

<template>

    <div>

        <p>aaa</p>

        <p>bbb</p>

    </div>

</template>

 

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