The server response "Permission denied", how to fix it?

SessionOptions sessionOptions = new SessionOptions
{
   Protocol = Protocol.Sftp,
   HostName = "devserver",
   UserName = "ftpClient",
   Password = "123456",
   SshHostKeyFingerprint = "ssh-rsa 1024 63:3d:d2:6e:19:f5:2b:e4:be:02:3b:5b:ab:d3:75:9a"
};

using (Session session = new Session())
{
   session.DisableVersionCheck = true;
   session.SessionLogPath = @"d:\winscpLog.txt";
   session.Open(sessionOptions);

   TransferOptions transferOptions = new TransferOptions();
   transferOptions.TransferMode = TransferMode.Binary;
   TransferOperationResult transferResult;
   transferResult = session.PutFiles(@"D:\Cache\DCCV2\*", "/home/ftpClient/", false, transferOptions);

   transferResult.Check();
   foreach (TransferEventArgs transfer in transferResult.Transfers)
   {
      Console.WriteLine("Upload of {0} succeeded", transfer.FileName);
   }
}