sftp-server is a program that speaks the server side of SFTP protocol to stdout and expects client requests from stdin. sftp-server is not intended to be called directly, but from sshd(8) using the Subsystem option. See sshd(8) for more information.
sftp-server first appeared in OpenBSD 2.8 .
lib/main.php:944: Notice: PageInfo: Cannot find action page