在C＃中通过API在Azure中创建存储帐户时发生异常

Question

enter code here我创建了一个类，用于获取创建凭据所需的令牌，然后在使用c＃an exception＆＃34时在azure环境中创建存储帐户;服务器无法验证请求。验证证书是否有效并与此订阅相关联＃34;发生。请告诉我如何解决此问题？

 public async static Task<string> CreateStorageAccount(SubscriptionCloudCredentials credentials)
        {
            using (var storageClient = new StorageManagementClient(credentials))
            {
                await storageClient.StorageAccounts.CreateAsync(

                  new StorageAccountCreateParameters
                  {
                      AccountType = "Standard_GRS",
                      // AccountType = AccountType.StandardLRS, Location = "West US"
                      //GeoReplicationEnabled = false,
                      Label = "Sample Storage Account",
                      Location = LocationNames.EastAsia,
                      Name = ConfigurationManager.AppSettings["storageName"]
                  });
            }
            return "Successfully created account.";
        }

提前致谢