There was a problem connecting the "data" connection to the server, it has not responded.
The replies from the FTP Server indicate that it is behind a router or firewall and the router isn't recognizing the FTP communications to open and forward the correct port for the "data" connection. This most often happens for a FTP Server running on your home network, especially if you are using a non-default "port" for the main FTP Server (ie, not port 21).
You very likely need to add some "Port Forwarding" settings on your router.