temolate v-for> key should be placed on the <temolate> tag

Actually, the "key" attribute should be placed on the element that is being looped over, not on the `<template>` tag itself. The "key" attribute is used by Vue.js to keep track of which elements in a list have changed, been added, or been removed, and it helps to optimize the rendering performance of the application.

For example, if you are rendering a list of items using `v-for`, you should add the "key" attribute to the element that contains the unique identifier for each item, like this:

<ul>
  <li v-for="(item, index) in items" :key="item.id">{{ item.name }}</li>
</ul>

In this example, we are rendering a list of items, and each item has a unique "id" property. We add the "key" attribute to the `<li>` element and set it to the value of "item.id". This tells Vue.js to track each item in the list based on its "id" property, which allows it to efficiently update the DOM when the list changes.

In summary, the "key" attribute should be placed on the element that is being looped over, not on the `<template>` tag itself.