Error : SyntaxError: Unexpected end of JSON input at Object.parse

I am trying to do a create on a Kendo Grid to a C# WebAPI and I get a error errorThrown: SyntaxError: Unexpected end of JSON input at Object.parse (native) at n.parseJSON There is nothing in the query string and the object is coming back null $(document).ready(function () { $("#btnInsert").on("click", function () { $("#btnInsert").on("click", function () { var grid = $('#SupplierGrid').data('kendoGrid'); grid.addRow(); }); }); $("#SupplierGrid").kendoGrid({ height: 700, resizeable: true, sortable: true, pageable: true, columns: [ { field: "supplierNumber", title: "Product ID", width: 13 }, // Product ID { field: "supplierDesc", title: "Product Pack", width: 14 }, // Product Pack { field: "corpei", title: "Processing Fee", width: 15 }], // Processing Fee filterable: true, dataSource: { transport: { read: { url: "/Supplier/GetSuppliers", cache: false, datatype: "json" }, update: { url: "/Supplier/Updatesupplier", dataType: "json", }, create: { url: "/Supplier/CreateSupplier", dataType: "json", type: "POST" }, parameterMap: function (options, operation) { if (operation !== "read" && operation !== "create" && options) { return { models: kendo.stringify(options) }; } } }, change: function (e) { if (e.action == "itemchange") { this.sync(); } }, schema: { data: "Data", total: "Total", model: { id: "supplierNumber", fields: { supplierNumber: { type: "string", editable: true }, supplierDesc: { type: "string", editable: true }, corpei: { type: "string", editable: true }, isActive: { type: "string", editable: false } } } }, pageSize: 15, requestEnd: function (e) { var response = e.response; var type = e.type; if (type == window.undefined) { // showError(); var popupNotification = $("#popupNotification").kendoNotification( { position: { top: $(document).height() / 2 + 300, right: $(document).width() / 2 }, allowHideAfter: 500, stacking: "down" } ).data("kendoNotification"); var staticNotification = $("#staticNotification").kendoNotification({ appendTo: "#appendto" }).data("kendoNotification"); popupNotification.show("Save Failed", "error"); } else { if (type == 'update') { var popupNotification = $("#popupNotification").kendoNotification( { position: { top: $(document).height() / 2 + 300, right: $(document).width() / 2 }, allowHideAfter: 500, stacking: "down" } ).data("kendoNotification"); var staticNotification = $("#staticNotification").kendoNotification({ appendTo: "#appendto" }).data("kendoNotification"); popupNotification.show("Cell Saved", "success"); } } } }, scrollable: true, Batch: true, navigatable: true, editable: { //disables the deletion functionality update: true, destroy: false }, serverPaging: true, resizeable: true, serverSorting: true }); $('#SupplierGrid').data('kendoGrid').dataSource.bind("error", dataSource_error); }); function dataSource_error(e) { } [HttpPost] public JsonResult CreateSupplier(supplier s) { supplier model = null; }