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我不知道为什么会收到“datatables警告：table id=report\u table-无效json响应”。有关此错误的详细信息，请参阅http://datatables.net/tn/1 一切正常数据返回正常，但未显示在数据表中，此错误弹出，即使在网络选项卡中也没有错误

$raw_qry = "SELECT `order`.id as order_no,`order`.order_date,users.first_name,users.last_name,`order`.`discount_amount`,`order`.`sub_total`,`order`.total,order_type.type, order_resources.resource_name,order_status.name from `order` join users on users.id=`order`.user_id join order_type on order_type.id=`order`.`order_type_id` join order_resources on order_resources.id=`order`.`order_resource` join order_Status on order_status.id=`order`.`status_id` join restaurant_branch on restaurant_branch.id=`order`.restaurant_branch_id WHERE 1  $wh AND Date(`order`.`order_date`) BETWEEN  '$start_date' AND '$end_date' AND `order`.`status_id` <> 8 order by `order`.id asc";

            $qry_result = DB::select( DB::raw($raw_qry) );

            $recordsTotal = $recordsFiltered = count($qry_result);

            $qry_result = DB::select( DB::raw($raw_qry. $limit) );
        }
        $resp = array();
        $i = 0;
        foreach($qry_result as $item)
        {
            $resp[$i][0] = $item->order_no;
            $resp[$i][1] = $item->order_date;
            $resp[$i][2] = $item->first_name."".$item->last_name;
            $resp[$i][3] = $item->discount_amount;
            $resp[$i][4] = $item->sub_total;
            $resp[$i][5] = $item->total;
            $resp[$i][6] = $item->type;
            $resp[$i][7] = $item->resource_name;
            $resp[$i][8] = $item->name;
            $i +=1;
        }

        $data = array(
            'draw' => $draw,
            'recordsTotal' => $recordsTotal,
            'recordsFiltered' =>  $recordsFiltered,
            'data' =>  $resp
        );
        return json_encode($data,true);