Here are my log:

(003421) [13:34:59] % chmod 777 -R /dev/ashmem
(003421) [13:34:59] % chmod 777 -R /dev/graphics
(003421) [13:34:59] % chmod 777 -R /dev/ion
(003421) [13:34:59] % chmod 777 -R /dev/fb1
(003421) [13:34:59] % chmod 777 -R /dev/fb0
(003421) [13:34:59] % chmod 777 -R /dev/video3
(003421) [13:34:59] % chmod 777 -R /dev/video2
(003421) [13:34:59] % chmod 777 -R /dev/video
(003421) [13:34:59] % chmod 777 -R /dev/video1
(003421) [13:34:59] % chmod 777 -R /dev/video33
(003421) [13:34:59] % chmod 777 -R /dev/video32
(003421) [13:34:59] % chmod 777 -R /dev/video0
(003421) [13:34:59] % lxc-start -P /var/lib/waydroid/lxc -F -n waydroid -- /init
(003421) [13:34:59] New background process: pid=5843, output=background
lxc-start: utils.c: safe_mount: 1653 Not a directory - Failed to mount /dev/video onto /usr/lib/aarch64-linux-gnu/lxc/dev/video
lxc-start: utils.c: open_without_symlink: 1584 Too many levels of symbolic links - vibrator in /usr/lib/aarch64-linux-gnu/lxc/sys/class/leds/vibrator was a symbolic link!
(003421) [13:34:59] Save session config: /var/lib/waydroid/session.cfg
(005652) [13:35:00] Failed to start Clipboard manager service, check logs
(003421) [13:35:01] Failed to add service waydroidhardware: -2147483647
(005652) [13:35:01] Failed to add service waydroidusermonitor: -2147483647

phablet@ubuntu-phablet:~$ cat /var/lib/waydroid/session.cfg
[session]
pulse_runtime_path = /run/user/32011/pulse
user_id = 32011
xdg_runtime_dir = /run/user/32011
waydroid_data = /home/phablet/.local/share/waydroid/data
xdg_data_home = /home/phablet/.local/share
user_name = phablet
group_id = 32011
wayland_display = None
lcd_density = 480
host_user = /home/phablet
state = RUNNING

The wayland_display=None variable may be the problem but I can't figure out how to solve that.

Thanks for your help.