How to use fixtures in API tests?

Yii 2.0 Testing
1

I have the following configuration in my api.suite.yml file:

actor: ApiTester
modules:
  enabled:
    - \common\tests\Helper\Api
    - Yii2:
        part:
            - orm
            - fixtures
    - REST:
        url: http://***ru-local/api/v1/
        depends: PhpBrowser

In codeception.yml:

modules:
    config:
        Yii2:
            configFile: 'config/test-local.php'
        Db:
            dsn: 'mysql:host=db;dbname=***_test;charset=utf8mb4'
            user: 'root'
            password: ''
            databases:
                db:
                    dsn: 'mysql:host=db;dbname=***_test;charset=utf8mb4'
                    user: 'root'
                    password: ''
                    reconnect: true

In the tests:

public function _fixtures(): array
{
    return [
        'customers' => [
            'class' => CustomersFixture::class,
            'dataFile' => $this->getDataDir() . 'customers.php',
        ],
        'customerSubscribes' => [
            'class' => CustomerSubscribesFixture::class,
            'dataFile' => $this->getDataDir() . 'customer_subscribes.php',
        ],
    ];
}

public function testGetActiveExpertSubscribe(ApiTester $I)
{
    $I->haveHttpHeader('accept', 'application/json');
    $I->haveHttpHeader('content-type', 'application/json');
    $I->haveHttpHeader('Cookie', 'webapp-backend=mahgr8qki47aef5c2a27n0tsum');
    $I->sendGET("/customers/{$this->customer->id}/active-expert-subscribe");
}

During the execution of sendGET, it returns values from the main database instead of from the fixtures.