Server sent disconnect message type 11 (by application)

We are using winscp dll version 5.5.3 to transfer file to SFTP. We are getting the error as "Server sent disconnect message type 11 (by application)" and the file is not transferred.

We are facing this issue in our Production environment. Please assist to the earliest.

Can you login to that server anyhow from the same machine? E.g. using WinSCP GUI? Or any other SFTP or SSH client? Please post some log files documenting that.