无法使用v复制我的表单-需要vuejs帮助

<template>
  <div>
    <form v-for="(item, index) in formItems" :key="index">
      <input type="text" v-model="item.name" placeholder="姓名">
      <input type="text" v-model="item.email" placeholder="邮箱">
      <button @click="removeFormItem(index)">删除</button>
    </form>
    <button @click="addFormItem">添加表单项</button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      formItems: [
        { name: '', email: '' }
      ]
    };
  },
  methods: {
    addFormItem() {
      this.formItems.push({ name: '', email: '' });
    },
    removeFormItem(index) {
      this.formItems.splice(index, 1);
    }
  }
};
</script>