Until the fix is automatically deployed by the next release, please use the following work around. Run the following commands on a terminal as an admin user:
firewall-cmd --direct --remove-passthrough ipv6 -A INPUT -p tcp --dport 8200 -j REJECT
firewall-cmd --permanent --direct --remove-passthrough ipv6 -A INPUT -p tcp --dport 8200 -j REJECT
firewall-cmd --direct --remove-passthrough ipv4 -A INPUT -p tcp --dport 8200 -j REJECT
firewall-cmd --permanent --direct --remove-passthrough ipv4 -A INPUT -p tcp --dport 8200 -j REJECT
This workaround will be removed if minidlna app is disabled and re-enabled.