Failure while moving file using MoveTo method

Hi,

I am facing an error while copying a file from one folder to another in SFTP share. The error only states "failure". It was working perfectly fine 2 weeks before, now it does not work anymore.
My code:
List remote_files = new List();
remote_files = sftp.ListDirectory("/data/Ecounsel/").Where(y => y.Name.Contains(".xml")).ToList();
foreach (var file in remote_files)
{
file.MoveTo("/data/appfolder/Archive/" + file.Name + ".processed"); <----Error on this line
logger.Info("File " + file.Name + " archived successfully.");
}

Stack trace:

                     Failure
                     at Renci.SshNet.Sftp.SftpSession.RequestRename(String oldPath, String newPath)
                     at Renci.SshNet.Sftp.SftpFile.MoveTo(String destFileName)

Could you please help regarding this?

Just a note, I am using the 2020.0.0-beta1 version.

Thanks and Regards,
Soumita

Start with the failing file.MoveTo call in the provided code and follow the stack trace into SftpFile.MoveTo and SftpSession.RequestRename. Reproduce the failure using the stated 2020.0.0-beta1 version and the given source and destination paths, then compare the observed behavior with the expected SFTP rename result.