The system kernel is at version “6.3.4-060304-generic”, but the system is configured to boot version “5.4.0-152-generic”.

The system kernel is at version "6.3.4-060304-generic", but the system is configured to boot version "5.4.0-152-generic". Reboot the system. If the problem persists, check the GRUB boot configuration. Operating System Ubuntu v20.04.5 Product cPanel & WHM v112.0.3 (STANDARD)