element-ui 表单验证无法正确显示？

halo，我是vue新手，最近打算自己使用 laravel+vue 做点东西，但是遇到了点问题，卡了两天。

前端使用的是 element-ui 的开发的。在进行表单认证的时候出现了一个现象：两个输入框，一个验证的提示信息一直显示。网上找了一圈，没找到办法，来此请教！

贴出主要代码如下（省略无关代码）：

<el-form :model="orderPayments" :rules="rules" label-width="100px" ref="orderMainForm">
<el-col :span="8">
    <el-form-item label="交款人：" prop="jk_driver_id">
      <select-driver :selected="orderPayments.jk_driver_id" @changeSelect="jkrChange"></select-driver>
    </el-form-item>
</el-col>
<el-col :span="8">
  <el-form-item label="存款日期：" prop="ck_at">
    <el-date-picker
      v-model="orderPayments.ck_at"
      type="datetime"
      placeholder="选择日期时间"
      align="right"
      :picker-options="dateOptions">
    </el-date-picker>
  </el-form-item>
</el-col>
</el-form>
<script>
import SelectStore from 'components/Selector/SelectStore';
export default {
name: 'MainOrderDetail',
components: { SelectDriver },
props: {
mainOrder: {
  type: Object,
  default: null
},
inputStaus: {
  tyep: String,
  default: 'edit'
}
},
data() {
return {
  rules: {
    jk_driver_id: [
      { required: true, message: '请选择交款人', trigger: 'change' }
    ],
    ck_at: [
      { type: 'date', required: true, message: '请选择存款日期', trigger: 'change' }
    ],
  },
}
},
computed: {
orderPayments() {
  return this.mainOrder;
}
},
methods: {
jkrChange(val) {
  this.orderPayments.jk_driver_id = val
},
}

下面为 SelectStore 组件

<template>
<el-select v-model="selectAt" filterable
placeholder="请输入关键词">
<el-option
  v-for="item in selectOptions"
  :key="item.id"
  :label="item.name"
  :value="item.id">
</el-option>
</el-select>
</template>
<script>
import { fetchList } from 'api/restfull';
export default {
props: {
selected: {
  default: ''
}
},
data() {
return {
  selectOptions: [],
  selectAt: '',
  loading: false
}
},
mounted() {
this.selectAt = this.selected;
this.getOptions();
},
methods: {
getOptions() {
  fetchList({}, '/drivers_list').then(response => {
    this.selectOptions = response.data;
  })
}
},
watch: {
selectAt(v) {
  this.$emit('changeSelect', v)
}
}
}
</script>