This is my code:
<lm-contact-type-select
v-model="value.dimensions[0]"
/>
and the problem is that sometimes value doesn't have dimensions, which cause an error. What can I do to prevent it?
You have to check before render this component. So,
<div v-if="value.dimensions.length">
<lm-contact-type-select
v-model="value.dimensions[0]"
/>
</div>