未捕获的TypeError：无法读取未定义的VUE 2.0的属性“推”

Question

我实际上是在youtube上学习Vue.js的教程，因此遇到了这个错误 我是第一次在这里发布问题。如果我做错了事，我提前道歉

错误：未被捕获的TypeError：无法读取未定义的属性“ push”

这是我正在观看的视频教程的链接，我被困在47:03 https://www.youtube.com/watch?v=z6hQqgvGI4Y

 <template>
<div class="users">
<h1> Users </h1>

<form v-on:submit="addUser">
<input type="text" v-model="newUser.name" placeholder="Enter name">
<br />
<input type="text" v-model="newUser.email" placeholder="Enter email">
<br />
<input type="submit" value="submit">
</form>


<ul>
<li v-for="user in user">
<input type="checkbox">
{{user.name}}: {{user.email}}<button v-on:click="">delete</button>
</li>
 </ul>
</div>
</template>

<script>
export default{
  name: 'users',


  data(){
    return {
    newUser:{},

        user: [{
            name: "Aanif Zia",
            email: "aanif@hotmail.com",
            contacted: false
            },
            {
            name: "Annas Zia",
            email: "annas@gmail.com",
            contacted: false
            },
            {
            name: "Siemel Zia",
            email: "siemel@live.com",
            contacted: false
            }
            ]
          }
        },

    methods: {
addUser: function(e){
this.users.push(
{
name: this.newUser.name,
email: this.newUser.email,
contacted: false,
});
e.preventDefault();
}
              }
}
</script>

<style scoped>

</style>