Firewall Status: Enabled but Stopped

Cyberpanel version: 1.9 Build 3
Ubuntu 18.04 LTS

Under security >csf - cant turn on the firewall. When clicking on the button it shows Changes successfully applied but as soon as refresh page its turn off.

Under ConfigSever Security> CONFIGSERVER SECURITY AND FIREWALL>

ConfigServer Security & Firewall - csf v14.00

Firewall Status: Enabled but Stopped

When clicking on start button shows

Flushing chain INPUT' Flushing chain FORWARD’
Flushing chain OUTPUT' Flushing chain PREROUTING’
Flushing chain INPUT' Flushing chain OUTPUT’
Flushing chain POSTROUTING' Flushing chain PREROUTING’
Flushing chain OUTPUT' Flushing chain PREROUTING’
Flushing chain INPUT' Flushing chain FORWARD’
Flushing chain OUTPUT' Flushing chain POSTROUTING’
open3: exec of /usr/sbin/ipset flush failed: No such file or directory at /usr/sbin/csf line 5399.

IP table test

Testing ip_tables/iptable_filter…OK
Testing ipt_LOG…OK
Testing ipt_multiport/xt_multiport…OK
Testing ipt_REJECT…OK
Testing ipt_state/xt_state…OK
Testing ipt_limit/xt_limit…OK
Testing ipt_recent…OK
Testing xt_connlimit…OK
Testing ipt_owner/xt_owner…OK
Testing iptable_nat/ipt_REDIRECT…OK
Testing iptable_nat/ipt_DNAT…OK

RESULT: csf should function on this server

Already tried to restart csf, ifd and server also reinstalled iptables yet no help

yum install -y ipset

ipset is already the newest version (6.34-1).

Ask for help there ConfigServer Community Forum - Index page its their software.