DNS_PROBE_FINISHED_NXDOMAIN – WLtalk - A community for web creators

WLtalk - A community for web creators DNS_PROBE_FINISHED_NXDOMAIN Aka Zadd

After FOLLOWING all steps from https://www.youtube.com/watch?v=XV1cOGaZUq0&t=213s

I am facing this DNS_PROBE_FINISHED_NXDOMAIN error.

Kindly HELP ME OUT WITH THIS.