我刚刚完成了Oauth2流程，它工作得很完美。我正在使用官方的PHP库，但我不能让我的cron作业更新令牌。
我收到这个错误：* 未捕获异常“BadMethodCallException”，消息为“未传递必需参数：“refresh_token”* 当我尝试刷新时。
代码如下。

ini_set('display_errors', 'On');
  require '../../vendor/autoload.php';
  include '../config.php';

  // Use this class to deserialize error caught
  use XeroAPI\XeroPHP\AccountingObjectSerializer;

  $accessToken  = "**********"
  $refreshToken = "**********"
  $realID       = "**********"  

  $xeroTenantId = (string)$realID;

    $provider = new \League\OAuth2\Client\Provider\GenericProvider([
      'clientId'                => '********************************',   
      'clientSecret'            => '******************************************',
      'refresh_token'           =>   $refreshToken,
      'urlAuthorize'            => 'https://login.xero.com/identity/connect/authorize',
      'urlAccessToken'          => 'https://identity.xero.com/connect/token',
      'urlResourceOwnerDetails' => 'https://identity.xero.com/resources'
    ]);

    $newAccessToken = $provider->getAccessToken('refresh_token', [
      'refresh_token' =>  $refreshToken
    ]);

    $config = XeroAPI\XeroPHP\Configuration::getDefaultConfiguration()->setAccessToken( (string)$refreshToken );    
  
  $accountingApi = new XeroAPI\XeroPHP\Api\AccountingApi(
    new GuzzleHttp\Client(),
    $config
  );

  $assetApi = new XeroAPI\XeroPHP\Api\AssetApi(
    new GuzzleHttp\Client(),
    $config
  );  

  $identityApi = new XeroAPI\XeroPHP\Api\IdentityApi(
    new GuzzleHttp\Client(),
    $config
  );  

  $projectApi = new XeroAPI\XeroPHP\Api\ProjectApi(
    new GuzzleHttp\Client(),
    $config
  );

有没有人能看出我错过了什么？