带有依赖项注入的绑定不起作用.目标不可实例化

所以这可能很容易，但我已经四处走动了几个小时。错误消息

Illuminate ' Container ' BindingResolutionException
Target [foo'repositories'OrderRepositoryInterface] is not instantiable.

我的界面：

<?php  namespace foo'repositories;
interface OrderRepositoryInterface
{
 public function index(array $dateRange = null, $customerId = null);
}

存储库：

<?php  namespace foo'repositories;
use Carbon'Carbon;
use Order;
class OrderRepository implements OrderRepositoryInterface
{

public function index(array $dateRange = null, $customerId = null)
{
    return 'HI';
}

} 

我的路线文件：

App::bind('foo'repositories'OrderRepositoryInterface.php',
          'foo'repositories'OrderRepository.php');

Route::resource('orders', 'OrdersController');

最后是控制器：

<?php
use foo'repositories'OrderRepositoryInterface;
class OrdersController extends 'BaseController
{
protected $order;
/**
 * @param OrderRepositoryInterface $order
 */
public function __construct(OrderRepositoryInterface $order)
{
    $this->order = $order;
}

public function index()
{
    $orders = $this->order->index();
    return $orders;
}