i have installed nethunter on an unrooted samsung galaxy a10 using this: https://www.kali.org/docs/nethunter/nethunter-rootless/
i type "nh -r kex"
i get the following message in termux:

proot warning: ptrace(POKEDATA): I/O error

and the following in kex client:

Connection to VNC server failed with reason: java.io.DataInputStream.readFully(DataInputStream. jav a:200)