Node Red OPCUA error when installing

Hi All,

I am facing an issue when I try to install OPCUA node in Node Red... Below is the message I am getting when I try to install it. Can someone please tell me why this is happening and how can I solve it ?

root@iot2000:~# npm install node-red-contrib-opcua
npm ERR! Linux 4.4.105-cip15
npm ERR! argv "/usr/bin/node" "/usr/bin/npm" "install" "node-red-contrib-opcua"
npm ERR! node v6.12.3
npm ERR! npm v3.10.10
npm ERR! code EAI_AGAIN
npm ERR! errno EAI_AGAIN
npm ERR! syscall getaddrinfo

npm ERR! getaddrinfo EAI_AGAIN
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR!

npm ERR! Please include the following file with any support request:
npm ERR! /home/root/npm-debug.log

Best Regards.

If you google EAI_AGAIN you will see it is a DNS error so its a network issue