FTP server and chroot: SSL3 alert write: fatal: protocol version


When i enable "chroot_local_user=YES" in my FTP server config /etc/vsftpd/vsftpd.conf
then the FTP client (WinSCP) says:

when it is commented out and "service vsftpd restart" , it login OK, but allows browsing system directories in the /.
This is CentOS 7 Linux.

These are…

FTP server and chroot: SSL3 alert write: fatal: protocol version