This vuetify data table cause an error

sampledatatable.vue

 <template>
	<div>
		<v-container>
			<v-data-table :headers="headers" :items="dataku" class="elevation-1" item-key="id"> </v-data-table>
		</v-container>
	</div>
</template>

 <script>
export default {
	data() {
		return {
			headers: [
				{ text: "ID", value: "id" },
				{ text: "Name", value: "name" },
				{ text: "Phone Num", value: "phone" },
				{ text: "Unique ID", value: "uid" }
			],
			dataku: [
				{ id: 382913, name: "something", phone: "08382174832", uid: 32197391 },
				{ id: 238199, name: "gone gone", phone: "382919111", uid: 397428999 }
			]
		};
	},
};
</script>