I tried upgrading using
sh <(curl https://raw.githubusercontent.com/usmannasir/cyberpanel/stable/preUpgrade.sh || wget -O - https://raw.githubusercontent.com/usmannasir/cyberpanel/stable/preUpgrade.sh)
After doing so I reboot server and then unable to access anything, no SSH access etc, had to resort to restoring using a snaphot.
Any ideas please