Failed to establish data socket?

This is the error I’m receiving and don’t know how to fix it. Any ideas as every user on the server receive the same error.
Can’t read from control socket. Socket error = #0.
Failed to establish data socket.

so I know its not just me.

really appreciate the info and help.

Already responding to your PMs @taterzero. Please respond there as I am already attempting to aid you with this query. Additionally, are all of your users having this issue (yourself included) using CuteFTP?