How to update data() in vue.draggable - vue.js

Question

I know this may be basic stuff... but I cannot get my data updated when using Vue.Draggable 2.23. In the code below, the 4 lists are returned from the axios call exactly as they are now return by data(), but then, of course, with content. Somehow I keep getting "Property or method "lane0" is not defined on the instance but referenced during render." In App.vue:
<script>
import draggable from "vuedraggable";
import axios from "axios";
export default {
name: "two-lists",
display: "Two Lists",
order: 1,
components: {
draggable
},
data() {
return {
"lane0": [],
"lane1": [],
"lane2": [],
"lane3": []
}
},
mounted () {
axios
.get('http://localhost:8000/pylims/get_sequencable_lanes/10/S4')
.then(response => (this.data= response.data))
},
methods: {
log: function(evt) {
window.console.log(evt);
}
}
}
</script>
On request, the HTML part (template in App.vue):
<template>
<div class="row">
<div class="col-3">
<h3>Draggable 1</h3>
<draggable class="list-group" :list="lane0" group="people" #change="log">
<div
class="list-group-item"
v-for="(element, index) in lane0"
:key="element.sample_name"
>
{{ element.sample_name }} {{ index }}
</div>
</draggable>
</div>
<div class="col-3">
<h3>Draggable 2</h3>
<draggable class="list-group" :list="lane1" group="people" #change="log">
<div
class="list-group-item"
v-for="(element, index) in lane1"
:key="element.sample_name"
>
{{ element.sample_name }} {{ index }}
</div>
</draggable>
</div>
<div class="col-3">
<h3>Draggable 3</h3>
<draggable class="list-group" :list="lane2" group="people" #change="log">
<div
class="list-group-item"
v-for="(element, index) in lane2"
:key="element.sample_name"
>
{{ element.sample_name }} {{ index }}
</div>
</draggable>
</div>
<br><br>
{{ lane0 }}
<br><br>
{{ lane1 }}
<br><br>
{{ lane2 }}
<br><br>
{{ lane3 }}
</div>
</template>

Answer 1

As Tobias G. states in the comment and is clearly explained here: https://v2.vuejs.org/v2/cookbook/using-axios-to-consume-apis.html the problem is solved by wrapping the lanes in an object, and then updating that from within the mounted() function, like this:
data() {
return {
lanes: {
"lane0": [],
"lane1": [],
"lane2": [],
"lane3": []
}
}
},
mounted () {
axios
.get('http://localhost:8000/pylims/get_sequencable_lanes/10/S4')
.then(response => (this.lanes = response.data))
},
then using it in the HTML part like this:
<draggable class="list-group" :list="lanes.lane0" group="people" #change="log">