When renaming or removing Files using sftp or ftp a lot of Exceptions are thrown and the connection are not closed

Current Situation

When using a ftp or sftp profile to work on a remote hot folder a lot of exceptions are thrown when renaming a file.

Also the client will max out it's connections .

Desired Behaviour

When renaming or deleting files from a remote server, there should not be an exception. The connection should be closed.