Just installed Stellarmate 1.5.9 and went to enable VNC in rpi-config and it's greyed out with the message VNC server not installed. I went and installed TigerVNC via apt but no change. VNC seems to be a colossal PITA on RPi's these days, and I like that it was previously seamless on Stellarmate. What do I need to do to get VNC working?