fails to connect vnc viewer to linux - Termux

hello people, I have been using linux for over 7 years and I never came across this problem.
I decided to use linux on my andro using Termux.when I connect via VNC, the error Code:The connection closed unexpectedly appears.
I noticed that whenever I connect to the vncserver, it ends the service automatically.

I would like to know the resolution of this problem if anyone knows.

Thanks...

Noonew