Resolve 'ERROR: '/usr/sbin/iptables-restore -w -n' failed: iptables-restore v1.8.2 (nf_tables):'

By Tech Writer Debian
After changing the configuration of a firewall the journal may report an error when restarting the firewall service such as the following: ERROR: '/usr/sbin/iptables-restore -w -n' failed: iptables-r
After changing the configuration of a firewall the journal may report an error when restarting the firewall service such as the following: ERROR: '/usr/sbin/iptables-restore -w -n' failed: iptables-restore v1.8.2 (nf_tables): This issue seems to be caused by a Debian bug documented here. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914694 The workaround is to change the valued of IndividualCalls to yes in /etc/firewalld/firewall.conf IndividualCalls=yes