Error: RADIUS-PLUGIN: FOREGROUND: common_name is not defined

[WW-build]

Hi, I'm having issues while trying to establish VPN connection using Radius module for OpenVPN. cat radius.cnf

NAS-Identifier=xxxx.domain.name Service-Type=5 Framed-Protocol=1 NAS-Port-Type=5 NAS-IP-Address=xxx.xxx.xxx.xxx OpenVPNConfig=/etc/openvpn/server.conf overwriteccfiles=false server { acctport=1813 authport=1812 name=xxx.xxx.xxx.xxx retry=1 wait=1 sharedsecret=xxxx }

cat server.conf

port xxxx proto tcp-server dev tun0 tun-mtu 1392 ca /etc/openvpn/ca.crt cert /etc/openvpn/server.crt key /etc/openvpn/server.key dh /etc/openvpn/dh2048.pem server xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx daemon mode server tls-server client-to-client ifconfig-pool-persist /etc/openvpn/ip.sv client-config-dir /etc/openvpn/ccd sndbuf 393216 rcvbuf 393216 keepalive 10 120 max-clients 1000 user openvpn group openvpn persist-key persist-tun status /var/log/openvpn/openvpn-status.log log-append /var/log/openvpn/openvpn.log crl-verify /etc/openvpn/crl.pem verb 2 tun-mtu 1500 management xxx.xxx.xxx.xxx 5555 duplicate-cn verify-client-cert none username-as-common-name plugin /etc/openvpn/radius/radiusplugin.so /etc/openvpn/radius/radius.cnf

Can you please clarify what is exactly wrong with my configuration?

OS: Centos 7 x64