The iview render data is not displayed and has not been reported wrong.

<div class="device-table-list">
    <Table stripe :columns="columns" :data="getTableData(currentPage)" @on-row-click="markerTap($event)" :disabled-hover="true"></Table>
</div>

columns: [
        {
          title: "",
          align: "center",
          key: "sn",
          width:110,
        },
        {
          title: "",
          align: "center",
          key: "alias",
          width:160,
        },
        {
          title: "",
          align: "center",
          key: "devtec",
          width:140,
        },
        {
          title: "",
          align: "center",
          key: "devsize",
          width:110,
        },
        {
          title: "",
          align: "center",
          key: "sum_energy",
          width:90,
        },
        {
          title: "",
          align: "center",
          key: "sum_flow",
          width:90,
        },
        {
          title: "",
          key: "monitor_object_state",
          align: "center",
          width:90,
          render: (h, params) => {
            if(params.row.monitor_object_state==1 || params.row.monitor_object_state==2){
              return ""
            }else if (params.row.monitor_object_state==3){
              return ""
            }else {
              return ""
            }
            console.log(monitor_object_state);
          }
        },
        {
          title: "",
          align: "center",
          key: "ckxq",
          render: (h, params) => {
            return params.row.ckxq = "";
          }

        },
      ],

if you write it in this way, it will neither show nor report an error. I really can"t find out the reason.
or is there any other way to display it

render: (h, params) => { if(params.row.monitor_object_state==1 || params.row.monitor_object_state==2){ return h('span', "") }else if (params.row.monitor_object_state==3){ //return "" return h('span', "") }else { //return "" return h('span', "") } console.log(monitor_object_state); }

{ title: "", key: "monitor_object_state", align: "center", width:90, render: (h, params) => { let value = '' if(params.row.monitor_object_state == 1 || params.row.monitor_object_state==2){ value = "" }else if (params.row.monitor_object_state==3){ value = "" }else { value = "" } return h('div',value) } }, { title: "", align: "center", key: "ckxq", render: (h, params) => { return h('div',""); } },