ACP2E-3255: [GRAPHQL] model value should be specified when getting customerCart

 - Fixed the CR comments.

Author: devarul

app/code/Magento/Quote/Model/CreateEmptyCartForCustomerWithoutCountryValidation.php

@@ -7,12 +7,14 @@
 
 namespace Magento\Quote\Model;
 
+use Exception;
 use Magento\Customer\Api\CustomerRepositoryInterface;
 use Magento\Framework\App\Config\ScopeConfigInterface;
 use Magento\Framework\Exception\LocalizedException;
 use Magento\Framework\Exception\NoSuchEntityException;
 use Magento\Quote\Api\CartRepositoryInterface;
 use Magento\Store\Model\StoreManagerInterface;
+use Magento\Framework\Exception\CouldNotSaveException;
 
 /**
  * Class for creating empty cart for customer without country validation