Csf will not start and I am getting errors in /var/log/messages

• Wednesday 27th June 2018 16:43
• • cPanel Service
  • csf
• • csf
  • iptables
  • xtables

Jan 1 21:01:32 [server hostname] csf[1234]: Another app is currently holding the xtables lock. Perhaps you want to use the -w option?
Jan 1 21:01:32 [server hostname] csf[1234]: Error: iptables command [/sbin/iptables -v --policy INPUT DROP] failed, at line 1357

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