I am trying to render a list of items in my NuxtJS application.

<Loading v-if="products.items.length === 0" />
<template v-else>
  <Product v-for="product in products.items" :product="product" />
</template>

and I get the error of

TypeError: Cannot read properties of null (reading ‘insertBefore’)

But if I replace the template tag with a div the error will be gone.
What can be the reason for that?