Getting ajax readystate 0 status 0 stuts :error

hai This is my code

var ajaxservice = WebUrl + "getAttachment?userid=" + userid + "&company_id=" + companyid + "&outlook_key=" + OutlookKey;

$.ajax({

type: 'post',

url: ajaxservice,

data: { "Attachment_Name": AttachmentName, "Attachment_content_data": Attachmentcontentdata},

contentType: "application/json",

dataType: 'json',

success: function (responce) {

//processData(responce);

//JSON.parse(results);

console.log(JSON.stringify(responce));

error: function (data) {

var dataa = JSON.stringify(data);

console.log(dataa);

}

});

Am Getting This Error ajax readystate 0 status 0 stuts :error