Your admin user doesn't appear to belong to clsudoer group. Bad fs.proc_super_gid option value in /etc/sysctl.conf

Issue

When opening the CloudLinux Manager, one gets the error message:

Your admin user doesn't appear to belong to clsudoer group. Please run the following script in order to resolve the issue:

$ /usr/share/l.v.e-manager/install-lvemanager-plugin.py -u

When running this command, one gets the next error message:
Unable to add unix user admin to sudoers group; error: Bad fs.proc_super_gid option value in /etc/sysctl.conf
Adding lvemanager user
adduser: group 'clsudoers' does not exist

Environment

• CloudLinux
• DirectAdmin

Solution

Boot system with a correct (CloudLinux) kernel.

Cause

System was booted with kernel different from CloudLinux OS.