iphone server unexpectedly closed network connection while trying to connect using winscp ssh

This is the only method that worked after several trials

1. Uninstall OpenSSH
2. Install IFile Using Cidiya
2 Open Ifile
3. . Delete Files
/ System / Library / LaunchDaemons / com.ikey.bbot.plist
/ Bin / poc-bbot
4. Reinstall OpenSSH