IE8 ajax can't get the token value. What is the situation?

< body >

<input type="button" value=123" onclick="up();"/>

< script type= "text/javascript" >

$.ajaxSetup({
    dataType: "json",
    cache: false,
    headers: {
        "token": "123"
    },
    error:function(err){
       
    }
    
});
function up(){
    alert(1)
    jQuery.support.cors = true; 
    $.ajax({
        type:"post",
        url:Router+"eccustomer/isNullPolicy",
        data:"1011596229328502786",
        contentType:"application/json;charset=UTF-8",
        async: true,
        success:function(res){  

        } 
    })
}

< / script >
< / body >


Apr.03,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-7be81a-2a4c8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-7be81a-2a4c8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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