The template root requires exactly one element.(vue/no-multiple-template-root)

This error message typically occurs in Vue.js when you have multiple root elements in your template. In Vue, each component template should have a single root element. To resolve this issue, you can wrap all the elements inside a parent element.

For example, if you have the following code:

<template>
  <div>
    <h1>Title</h1>
    <p>Content</p>
  </div>
  <div>
    <button>Submit</button>
  </div>
</template>

You can fix it by wrapping the elements inside a single parent element like this:

<template>
  <div>
    <div>
      <h1>Title</h1>
      <p>Content</p>
    </div>
    <div>
      <button>Submit</button>
    </div>
  </div>
</template>

By doing this, you ensure that there is only one root element in the template, which resolves the error.