ServerSide Jquery Datatables TypeError: c is undefined

Question

I try to use jQuery DataTables but I get the error

TypeError: c is undefined jquery.dataTables.min.js:36:417
jQuery 8
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I don't know what is wrong with my code as I can see the JSON correctly retrieve and is in the correct format too but I don't know what is wrong with it that I get the above error

$('#accountsTable').DataTable({
    "processing" : true,
    "serverSide" : true,
    "pageLength" : 100,
    "ajax" : {
        "url" : "/accountMaster",
    "data": function (data) { 

    }},
"columns": [{
"data": "cid"
}, {
"data": "account"
}, {
     "data": "ifsc"
 }, {
  "data": "purpose"
 }, {
 "data": "requestedby"
 }, {
 "data": "requesteddate"
 }, {
 "data": "action"
 }
 ]
 });