VNC Server problem on Raspberry Pi 5 4GB - LinuxCNC official image

I downloaded the official image from here; www.linuxcnc.org/iso/rpi-5-debian-bookwo...25-01-27-0140.img.xz
Everything is ok, linuxcnc and ethercat master is working, 

I am trying to connect via VNC from remote, when I connected to 192.168.1.122:1 via VNC's password, its connecting but there is only blank gray screen,
I installed tightvncserver also, its same,
What should I do?

Best bet is to google for the various internet resources for setting up vnc.
You may have some luck searching the forums, but it wasn't a package I thought needed, still don't, for running a CNC machine. I'm not a fan of running a CNC setup remotely.
If you just need to run an editor or even Linuxcnc remotely it can be via SSH.