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[vue/no-multiple-template-root] The template root requires exactly one element.eslint-plugin-vue

"vetur.validation.template": false,
"vetur.validation.script": false,
"vetur.validation.style": false,

The template root requires exactly one element.eslint-plugin-vue

Change the code in App.vue from as follows:-
<template>
<section> // add this section tag here
    <img alt="Vue logo" src="./assets/logo.png">
    <HelloWorld msg="Welcome to Your Vue.js App" />
</section> // end section here
</template>