Why does it swear at Unexpected 'v-bind' before ':'?

Question

Vue.js

I tried instead of template and insert key and bind = everything is super.
But I don't need to wrap everything in a div...
and throws two errors
error Unexpected 'v-bind' before ':' vue/v-bind-style
error Elements in iteration expect to have 'v-bind:key' directives vue/ require-v-for-key

<template
        v-for="start in starts"
      >
        <input
          :id="input_q + '-star-' + start.id"
          :name="input_q"
          :value="start.id"
          v-bind:key="start.id"
          type="radio"
        >
        <label
          :for="input_q+'-star-'+start.id"
        >{{ start.id }}</label>
      </template>

Answer 1

v-bind:it's the same as :. And keyshould stand on each iterable element. Unique for each element. This is obvious, if you understand why the hell it is needed at all (to update only those pieces that have really been updated and save those that have not changed).
Those. keyyou need more and label.

Answer 2

Just write :key="start.id", but in general, read the doc