реализация модели mvc php

Есть проблема подключения модели в контроллерe.Я создал основной метод для подключения файлов моделеи который вызывается при необходимости. Проблмa находится в методе actionServiceinfo() в который подключается requireModel() .Помогите с проблемой .Заранне спасибо

Вот Код

index.php

error_reporting(E_ALL);
ini_set("display_errors", 1);
require_once('Core/Bootstrap.php');
require_once('Core/Controller.php');
require_once('Core/Model.php');
require_once('Core/View.php');
require_once('Core/Database.php');
require_once('config/Database.php');
require_once('config/Secure.php');
$bootstrap = new Bootstrap();

Core/Bootstrap.php

private $controller = NULL;
    private $action = NULL;
    private $params = array();
    private function parseUrl(){
        if (isset($_GET['url'])) {
             $url = Secure::secureUrl($_GET['url']);
             return $url;
        }else{
             require_once('controller/HomeController.php');
             $object = new HomeController;
             $object->actionIndex();
             return false;
        }
    }
    public function __construct(){
        $explode = explode('/', $this->parseUrl());
        if (isset($explode[0])) {
              if (file_exists("controller/".ucfirst($explode[0])."Controller.php")) {
                       $this->controller = ucfirst($explode[0])."Controller";
                       require_once("controller/".$this->controller.".php");
              }else{
                    require_once('controller/ErrorController.php');
                    $object = new ErrorController();
                    $object->actionIndex();
                    return false;
              }
        }

        $object = new $this->controller;

        if (isset($explode[2])) {
             if (method_exists($object, "action".ucfirst($explode[1]))) {
                     $this->action = "action".ucfirst($explode[1]);
                     $this->param = $explode[2];
                     call_user_func([$object,$this->action], $this->param);
             }else{
                    require_once('controller/ErrorController.php');
                    $object = new ErrorController();
                    $object->actionIndex();
                    return false;
              }
        }else{
              if (isset($explode[1])) {
                   if (method_exists($object, "action".ucfirst($explode[1]))) {
                            $this->action = "action".ucfirst($explode[1]);
                            call_user_func([$object,$this->action]);

                   }else{
                         require_once('controller/ErrorController.php');
                         $object = new ErrorController();
                         $object->actionIndex();
                         return false;
                    }
              }else{
                  $object->actionIndex();
              }
        }
    }

}

Core/Controller.php

class Controller{
    public function __construct(){
       $this->view = new View();
    }

     public function requireModel($name){
        $pathe = "model/" . $name . "Model.php";
        if (file_exists($pathe)) {
            require_once($pathe);
            $this->model = new $name."Model";
        }
    }
}

Core/Model.php

class Model{

     public function __construct(){
        $this->db = new Database();
    }
}

Core/Database.php

class Database extends PDO {

    public function __construct(){
        parent::__construct(DB_TYPE . ":host=" . DB_HOST . ";dbname=" . DB_NAME,DB_USER, DB_PASS);
    }
}

Controller/ServiceController.php

class ServiceController extends Controller{
    public function __construct(){
       parent::__construct();
    }
    public function actionIndex(){
        $this->view->render('Service/index');
    }

    public function actionServiceinfo($id = NULL){
        $this->requireModel('Service');
        $serviceModel = new ServiceModel();
        $serviceInfo = $serviceModel->userInfo($id);
        $this->view->render('Service/info',$serviceInfo);
        print_r($serviceInfo);
    }

}

Model/ServiceModel.php

class ServieModel extends Model{
    public function __construct(){
        parent::__construct();
    }

    public  function userInfo($id){
       $studentPrepare = $this->db->prepare("SELECT * FROM `services` WHERE service_id = :service_id");
       $studentPrepare->execute([':service_id' => $id]);
       return $studentPrepare->fetch();
    }
}