Lfd.service error

I have a CloudLinux 7 + cPanel (Centos 7 + cPanel + Cloud Linux) servers, on which I installed CSF to operate with data. For months, all was good until I ran into an issue with a new server. I am getting these error codes, for which I need help:

lfd.service - ConfigServer Firewall & Security – lfd

Starting ConfigServer Firewall & Security - lfd…

srv systemd[1]: lfd.service: control process exited, code=killed status=9

srv systemd[1]: Failed to start ConfigServer Firewall & Security - lfd.

srv systemd[1]: Unit lfd.service entered failed state.

srv systemd[1]: lfd.service failed.