error upgrade cyberpanel

i want to upgrade cyberpanel with:
sh <(curl https://raw.githubusercontent.com/usmannasir/cyberpanel/stable/preUpgrade.sh || wget -O - https://raw.githubusercontent.com/usmannasir/cyberpanel/stable/preUpgrade.sh)

but an error message appears like this:
[root@vmi335129 ~]# sh <(curl https://raw.githubusercontent.com/usmannasir/cyberpanel/stable/preUpgrade.sh || wget -O - https://raw.githubusercontent.com/usmannasir/cyberpanel/stable/preUpgrade.sh)
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 396 100 396 0 0 1146 0 --:–:-- --:–:-- --:–:-- 1151
chmod: cannot access ‘/usr/local/cyberpanel_upgrade.sh’: No such file or directory
/dev/fd/63: line 8: /usr/local/cyberpanel_upgrade.sh: No such file or directory
[root@vmi335129 ~]#

can help me?

try with cyberpanel utility from terminal

command
root@hosting~# cyberpanel_utility

the upgrade process went on, but stopped halfway.

=================================
–2020-09-25 02:36:53-- https://raw.githubusercontent.com/usmannasir/cyberpanel/vml>.t/plogical/upgrade.py
Resolving raw.githubusercontent.com (raw.githubusercontent.com)… 151.101.12.133
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.12.133|:443… connected.
HTTP request sent, awaiting response… 404 Not Found
2020-09-25 02:36:53 ERROR 404: Not Found.

/usr/local/CyberPanel/bin/python: can’t open file ‘upgrade.py’: [Errno 2] No such file or directory

command failed, exiting…
[root@vmi335129 ~]#