Laravel Socialite почему не вызвает getAccessToken()?

public function getAccessToken($code)
    {
        $postKey = (version_compare(ClientInterface::VERSION, '6') === 1) ? 'form_params' : 'body';

        $response = $this->getHttpClient()->post($this->getTokenUrl(), [
            'headers' => ['Accept' => 'application/json'],
            $postKey => $this->getTokenFields($code),
        ]);

        $this->credentialsResponseBody = json_decode($response->getBody(), true);

        return $this->parseAccessToken($response->getBody());
    }