问在PHP/Laravel中没有来自Google客户端SDK的刷新标记

EN

{
    "message": "refresh token must be passed in or set as part of setAccessToken",
    "exception": "LogicException",
    "file": "/var/www/laravel/vendor/google/apiclient/src/Google/Client.php",
    "line": 266,
    "trace": [
        {
            "file": "/var/www/laravel/vendor/google/apiclient/src/Google/Client.php",
            "line": 254,
            "function": "fetchAccessTokenWithRefreshToken",
            "class": "Google_Client",
            "type": "->"
        },
        {
            "file": "/var/www/laravel/app/Services/GoogleService.php",
            "line": 50,
            "function": "refreshToken",
            "class": "Google_Client",
            "type": "->"

       }
}

class GoogleService {

    protected $client;

    protected $service;

    function __construct() {
        /* Get config variables */
        putenv('GOOGLE_APPLICATION_CREDENTIALS=' . resource_path(config('google.credentials')));

        $scopes = array(
            ...
        );

        $this->client = new \Google_Client();
        $this->client->useApplicationDefaultCredentials();

        $this->client->setApplicationName(config('google.app_name'));

        $service_account = config('google.service_account_name');
        $this->client->setSubject($service_account);

        $this->client->setScopes($scopes);
        $this->client->setAccessType('offline');
        $this->client->setApprovalPrompt('force');

        $this->service = new \Google_Service_Directory($this->client);

        /* If we have an access token */
        if (Cache::has('service_token')) {
            $this->client->setAccessToken(Cache::get('service_token'));
        }

        if ($this->client->isAccessTokenExpired()) {
            $this->client->refreshToken(Cache::get('service_token'));
        }

        Cache::forever('service_token', $this->client->getAccessToken());
    }

    public function verify($user_id)
    {
        try {

            $result = $this->service->users->get($user_id);

        } catch (\Google_Service_Exception $e) {

            Log::error($e->getMessage());

            return response()->json(['error' => 'There was a general error : ' . $e->getMessage()], 404);

        }

        return $result;
    }

    public function get($user_id)
    {
        $optParams = array('projection' => 'full');
        $user = $this->service->users->get($user_id, $optParams);

        if ($user_id !== $user->primaryEmail) {
            return response()->json(['error' => 'Unauthorized - Bad credentials.'], 401);
        }

        return $user;
    }
}