中后台管理系统个别报错问题

<template>
  <div class="returnList">
    <el-card shadow="never" class="margin-30">
https://img-mid.csdnimg.cn/release/static/image/mid/ask/239886538866193.png "#left")
      <div slot="header">
        <span>条件查询span>
      div>
      <el-form ref="form" :model="form" label-width="120px" :inline="false" size="normal">
        <el-row :gutter="20">
          <el-col :span="7" :offset="0">
            <el-form-item label="订单编号">
              <el-input v-model="form.orderSn" size="mini" placeholder="请填写订单编号" />
            el-form-item>
          el-col>
          <el-col :span="7" :offset="0">
            <el-form-item label="退单状态">
              <el-select v-model="form.status" filterable clearable size="mini" placeholder="退单状态">
                <el-option
                  label="待处理"
                  value="0"
                />
                <el-option
                  label="退货中"
                  value="1"
                />
                <el-option
                  label="已完成"
                  value="2"
                />
                <el-option
                  label="已拒绝"
                  value="3"
                />
              el-select>
            el-form-item>
          el-col>
        el-row>
        <el-row :gutter="20">
          <el-col :span="12" :offset="18">
            <el-button type="default" size="mini" @click="reset">重置el-button>
            <el-button type="primary" size="mini" @click="search">搜索el-button>
          el-col>
        el-row>
      el-form>
    el-card>
    
    <el-card shadow="never" class="margin-30">
      <el-table :data="list" border stripe>
        <el-table-column
          label="#"
          type="index"
          fixed="left"
          width="50px"
        />
        <el-table-column
          align="center"
          label="订单编号"
          prop="orderSn"
          width="250px"
        />
        <el-table-column
          align="center"
          label="退单状态"
          prop="orderSn"
          width="150px"
        >
          <template slot-scope="scope">
            <el-tag v-if="scope.row.status == 0" type="danger" effect="dark">待处理el-tag>
            <el-tag v-if="scope.row.status == 1" type="warning" effect="dark">退货中el-tag>
            <el-tag v-if="scope.row.status == 2" type="primary">已完成el-tag>
            <el-tag v-if="scope.row.status == 3" type="info">已拒绝el-tag>
          template>
        el-table-column>
        <el-table-column
          align="center"
          label="描述"
          prop="description"
          width="250px"
        />
        <el-table-column
          align="center"
          label="退单原因"
          prop="reason"
          width="250px"
        />
        <el-table-column
          align="center"
          label="商品名称"
          prop="productName"
          width="170px"
        />
        <el-table-column
          align="center"
          label="商品属性"
          prop="productAttr"
          width="200px"
        >
          <template slot-scope="scope">
            <div>
              <span>颜色:{{ scope.row.productAttr[0].value }}span>
              <span>大小:{{ scope.row.productAttr[1].value }}span>
            div>
          template>
        el-table-column>
        <el-table-column
          align="center"
          label="商家备注"
          prop="handleNote"
          width="150px"
        />
        <el-table-column
          align="center"
          label="添加时间"
          prop="createTime"
          width="250px"
        />
        <el-table-column
          fixed="right"
          align="center"
          label="操作"
          width="200"
        >
          <template slot-scope="scope">
            <el-button
              type="primary"
              style="width: 150px"
              size="mini"
              @click="goInfo(scope.row.id)"
            >
              <i
                style="margin-right: 6px"
                class="el-icon-view"
              />查看订单el-button>
          template>
        el-table-column>
      el-table>
      
      <el-pagination
        :background="true"
        style="margin:20px;"
        :current-page.sync="start"
        :page-size="limit"
        layout="total, sizes, prev, pager, next, jumper"
        :total="totalNum"
        :page-sizes="pageSizes"
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
      />

    el-card>
  div>
template>

<script>
import {
  orderDetail
} from '@/api/orderManagement/returnList/index'
export default {
  name: 'LejuAdminShopIndex',

  data() {
    return {
      list: [],
      start: 1,
      limit: 10,
      totalNum: 0,
      pageSizes: [5, 10, 20, 30],
      form: {
        'createTime': '',
        'handleTime': '',
        'memberUsername': '',
        'orderId': '',
        'orderSn': '',
        'status': ''
      }
    }
  },
  created() {
    this.init()
  },
  mounted() {

  },

  methods: {
    init() {
      orderDetail(this.start, this.limit, this.form)
        .then(res => {
          console.log('退单=>', res)
          res.data.rows.forEach(ele => {
            ele.productAttr = JSON.parse(ele.productAttr)
          })
          this.list = res.data.rows
          this.totalNum = res.data.total
        })
    },
    goInfo(id) {
      this.$router.push({
        name: 'ReturnInfo',
        params: {
          id: id
        }
      })
    },
    // 重置查询条件
    reset() {
      this.start = 1
      this.form = {
        'createTime': '',
        'handleTime': '',
        'memberUsername': '',
        'orderId': '',
        'orderSn': '',
        'status': ''
      }
      this.init()
    },
    // 条件搜索
    search() {
      this.start = 1
      this.init()
    },
    handleSizeChange(e) {
      this.start = 1
      this.limit = e
      this.init()
    },
    handleCurrentChange(e) {
      this.start = e
      this.init()
    }
  }
}
script>

<style lang="scss" scoped>
.returnList{
  .margin-30{
    margin: 30px;
  }
}
style>

写中后台管理系统项目中遇到这个报错,报错原因是:当点击退单状态中的退货中以及点击底部分页器第4页往后就报这个错误,请问一下大家怎么解决?

这里少了判断：productAttr可能为空，或者长度小于2都会报这个错
还有 span,div,template少了</

• 你可以看下这个问题的回答https://ask.csdn.net/questions/7756786