Data not displaying in datatables geting correct response from server side

I am fetching data from server side, getting data but its not displaying on datatable also not giving any error just showing "No matching records found"

Here is my java script code

$('#example').DataTable(
{
processing: true,
responsive:true,
serverSide: true,
order:[],
columns: [{data: "awx_name"},{data: "awx_address"},{data: "awx_totalbuildingarea"},{data: "Details"}],
columnDefs: [{orderable: false, targets:[-1]}],
ajax:
{
url: "<?php echo site_url('home/getAjaxList')?>",
type: 'POST'
}
});

Here is my php function

public function getAjaxList() {
$keyword = null;

    $search = $this->input->post('search');
    $offset = $this->input->post('start');
    $limit = $this->input->post('length');
    $order = $this->input->post('order');

    $column = array('awx_name', 'awx_address', 'awx_totalbuildingarea');

    $orderColumn = isset($order[0]['column']) ? $column[$order[0]['column']] : '';
    $orderDirection = isset($order[0]['dir']) ? $order[0]['dir'] : '';

    if(!empty($orderColumn) && !empty($orderDirection)){
        $ordrBy = $orderColumn . " " . $orderDirection;
    }else{
        $ordrBy ="";
    }

    if (isset($search['value']) && !empty($search['value'])) {
        $keyword = $search['value'];
    }

    $return_result = $this->tbl_stacking_property->dataTable_ajax_details($ordrBy, $limit, $offset, $keyword);

    $result = $return_result['result'];
    $count = $return_result['count'];

    $data = array();
    $emp_id = $this->session->userdata('emp_id');
    $data['user_data'] = $this->Mdgeneraldml->select('*', 'tbl_emp', array("emp_id" => $emp_id));


        foreach ($result as $key => $value) {
            $data[$key]['awx_name'] = $value['awx_name'];
            $data[$key]['awx_address'] = $value['awx_address'];
            $data[$key]['awx_totalbuildingarea'] = $value['awx_totalbuildingarea'];

            $button = "";
            if ($user_data[0]['e_read'] == '1') {
                $button .= "<a href=".base_url('home/view_property/').base64_encode($value['s_p_id'])." class='view'><i class='fas fa-building' title='Details'></i></a>"; 
            }
            if ($user_data[0]['e_write'] == '1') { 

                $button .= "<a href=".base_url('home/edit_property_details/').base64_encode($value['s_p_id'])." class='edit'><i class='fas fa-building' title='Edit'></i></a> | &nbsp;";
            }
            if ($user_data[0]['e_delete'] == '1') { 
                $button .= "<a href=".base_url('home/delete_property/').base64_encode($value['s_p_id'])." onClick='return confirm('Are you sure you want to Delete this Record?');' class='delete'><i class='fas fa-trash-alt' title='Delete'></i></a>";
            } 

            if(!empty($button)){
                $data[$key]['Details'] = $button;
            }else{
                $data[$key]['Details'] = "-";
            }


        }
       $response = array(
            "draw" => $this->input->post('draw'),
            "recordsTotal" => count($data),
            "recordsFiltered" => $count,
            "data" => $data
        );
       echo json_encode($response);

}

Please review the above and let me know

Thank You