I got the following error message when I use
ssh -v -Y. The server OS is mojave. Does anybody know what is wrong?
debug1: No xauth program. Warning: No xauth data; using fake authentication data for X11 forwarding. debug1: Requesting X11 forwarding with authentication spoofing. debug1: Sending environment. debug1: Sending env LANG = en_US.UTF-8 debug1: Remote: No xauth program; cannot forward X11. X11 forwarding request failed on channel 0