You see the "Reboot your system to update the kernel" message in WHM, but your running kernel is already CloudLinux one (has LVE in the name).
- CloudLinux OS 8
1. Update the kmod-lve package to the latest version with the following command:
yum update kmod-lve
2. Reboot the server:
The kmod-lve kernel module is not loaded. You can verify with:
lsmod | grep lve