In my code I am creating new ftp client every operation

try
{
using FtpClient conn = new(_ftpAuthConfig.Host, _ftpAuthConfig.UserName, _ftpAuthConfig.Password);
conn.Logger = new FtpLogAdapter(_logger);
conn.Connect();
conn.UploadBytes(data, Path.Combine(uploadFolderPath, fileName));
_logger.LogDebug("FTP: {fileName} uploaded to {folderPath}", fileName, uploadFolderPath);
}
catch (Exception ex)
{
_logger.LogError(ex, "FTP: Server Upload Error");
throw;
}

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But occasionally ftpfluent throws a warning reconnect needed due to stale data present on the control connection and after which it tries to reconnect and throws this error:

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FluentFTP.Exceptions.FtpException: Error while uploading the file to the server. See InnerException for more info. ---> System.AggregateException: Additional error occured while trying to resume uploading the file '/IN/5973_r3.xml' at position 131072 (Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host..) (You cannot modify the position of a FtpDataStream. This property is updated as data is read or written to the stream.) ---> System.IO.IOException: Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host.. ---> System.Net.Sockets.SocketException (10054): An existing connection was forcibly closed by the remote host. at System.Net.Sockets.NetworkStream.Write(Byte[] buffer, Int32 offset, Int32 count) --- End of inner exception stack trace --- at System.Net.Sockets.NetworkStream.Write(Byte[] buffer, Int32 offset, Int32 count) at FluentFTP.FtpClient.UploadFileInternal(Stream fileData, String localPath, String remotePath, Boolean createRemoteDir, FtpRemoteExists existsMode, Boolean fileExists, Boolean fileExistsKnown, Action`1 progress, FtpProgress metaProgress) --- End of inner exception stack trace --- at FluentFTP.FtpClient.ResumeUpload(String remotePath, Stream& upStream, Int64 remotePosition, IOException ex) at FluentFTP.FtpClient.UploadFileInternal(Stream fileData, String localPath, String remotePath, Boolean createRemoteDir, FtpRemoteExists existsMode, Boolean fileExists, Boolean fileExistsKnown, Action`1 progress, FtpProgress metaProgress) ---> (Inner Exception #1) System.InvalidOperationException: You cannot modify the position of a FtpDataStream. This property is updated as data is read or written to the stream. at FluentFTP.FtpDataStream.set_Position(Int64 value) at FluentFTP.FtpClient.ResumeUpload(String remotePath, Stream& upStream, Int64 remotePosition, IOException ex)<--- --- End of inner exception stack trace --- at FluentFTP.FtpClient.UploadFileInternal(Stream fileData, String localPath, String remotePath, Boolean createRemoteDir, FtpRemoteExists existsMode, Boolean fileExists, Boolean fileExistsKnown, Action`1 progress, FtpProgress metaProgress) at FluentFTP.FtpClient.UploadBytes(Byte[] fileData, String remotePath, FtpRemoteExists existsMode, Boolean createRemoteDir, Action`1 progress)

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Why is reconnection required when I am using new connection every operation and the size of files being uploaded is very less like 60kb.