升级后出现新错误，应该与升级无关。
我在我的项目中使用SendInBlue Php 库，在我的作曲家中加载：
"sendinblue/api-v3-sdk": "*@dev",
在我的服务中使用：
use SendinBlue\Client\Api\SMTPApi;
use SendinBlue\Client\Model\SendEmail;
调用：
$api_instance = new SMTPApi();
自升级以来，我有一个新错误：
尝试从命名空间“SendinBlue\Client\Api”加载类“SMTPApi”。您是否忘记了另一个名称空间的“使用”语句？
我试过清除缓存，让 rm -rf 删除缓存，使我的 phpStorm 缓存无效 + 重新启动，删除两个 USE 语句，然后查看我尝试创建新实例时显示的内容，但它仍然是添加的相同 USE 语句.
如果我在调用的类上 COMMAND+CLICK，它会显示相关的类 (SMTPApi)。
我完全不知道这里可能是什么问题，它与 symfony 升级有关吗？是作曲家更新改变了其他事情吗？
有关更多信息，这是我的服务的标题：
namespace App\Services;
use FOS\UserBundle\Mailer\MailerInterface;
use FOS\UserBundle\Model\UserInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
use Symfony\Component\Routing\Router;
use SendinBlue\Client\Api\SMTPApi;
use SendinBlue\Client\Model\SendEmail;
这是我的作曲家：
{ [...]
"require": {
"php": "^7.1.3",
"ext-iconv": "*",
"aws/aws-sdk-php": "^3.69",
"beelab/tag-bundle": "^1.4.0",
"friendsofsymfony/user-bundle": "^2.1",
"google/apiclient": "^2.0",
"gumlet/php-image-resize": "^1.9",
"kunalvarma05/dropbox-php-sdk": "^0.2.1",
"lildude/phpsmug": "^4.0",
"sendinblue/api-v3-sdk": "*@dev",
"sensio/framework-extra-bundle": "^5.1",
"sensiolabs/security-checker": "^4.1",
"symfony/apache-pack": "^1.0",
"symfony/asset": "^4.2",
"symfony/console": "^4.2",
"symfony/debug-pack": "^1.0",
"symfony/dependency-injection": "^4.2",
"symfony/dotenv": "^4.2",
"symfony/flex": "^1.0",
"symfony/form": "^4.2",
"symfony/framework-bundle": "^4.2",
"symfony/lock": "^4.2",
"symfony/maker-bundle": "^1.4",
"symfony/monolog-bundle": "^3.3",
"symfony/orm-pack": "^1.0",
"symfony/swiftmailer-bundle": "^3.0",
"symfony/translation": "^4.2",
"symfony/twig-bundle": "4.2",
"symfony/web-server-bundle": "^4.2",
"symfony/yaml": "^4.2"
},
"require-dev": {
"easycorp/easy-log-handler": "^1.0.2",
"symfony/debug-bundle": "^3.3|^4.2",
"symfony/profiler-pack": "^1.0",
"symfony/var-dumper": "^3.3|^4.2"
},
[...]
}