Таблица данных, заполненная json, jquery и webservice

data table when filled with json, jquery and webserice run fine on local machine but when publish on server it is giving Failed to load resource: the server responded with a status of 500 (Internal Server Error)

$.ajax({
            url: "testing.asmx/Get_DashBoardData",
            type: "post",
            dataType: "json",
            success: function (data) {
                $('#MO').dataTable({
                    data: data,
                    "bInfo": false, //Dont display info e.g. "Showing 1 to 4 of 4 entries"
                    "paging": false,//Dont want paging                
                    "bPaginate": false,//Dont want paging   
                    "bFilter": false, //hide Search bar
                    columns: [
                        { 'data': 'abc' },
                        { 'data': 'cde' },
                    ]
                });
            },
            error: function (request, status, error) {
                alert(request.responseText);
            }
        });