Vnc session problem

Hello,
I cannot get tightvncserver to work with deepin dde windows manager
Here is the content of xstartup
I try to connect to the current session

Code:#!/bin/sh
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS
# startxfce4 &
dde-session_dae &
[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey &
vncconfig -iconic &I can connect, but have a grey screen

The log says
/home/lounge/.vnc/xstartup: 5: /home/lounge/.vnc/xstartup: dde-session_dae: not found

I tried to figure out what is the process of the current windows manager session by listing with ps -A

Code: 442 ? 00:00:01 dde-system-daem
1339 ? 00:00:03 startdde
3146 ? 00:00:05 dde-session-dae
3147 ? 00:00:00 dde-osd
3879 ? 00:00:10 dde-dock
4069 ? 00:00:02 dde-desktop
4692 ? 00:00:00 dde-polkit-agen
6667 ? 00:00:00 startdde
6750 ? 00:00:00 startdde
6893 ? 00:00:00 startddeand
Code: 504 ? 00:00:00 deepin-anything
509 ? 00:00:00 deepin-anything
607 ? 00:00:00 deepin-anything
2576 ? 00:00:00 deepin-wm-dbus
3604 ? 00:00:00 deepin-sync-dae
3618 ? 00:00:00 deepin-sync-hel
4496 ? 00:00:00 deepin-cloud-pr
7232 ? 00:00:02 deepin-terminalI found no info on the deepin forum

Has someone already got Vnc working with Deepin ?

Thanks for your help