There is some issue in the linux DNS lab

There is this question where it is asked to change the DNS IP to Google IP. I have made the changes and by using the cat command I can able to check that the nameserver has been changed to 8.8.8.8 but don’t know why it’s showing its not complete. Don’t know what the issue is. Please correct it.

Please post a link to the lab and a copy of your /etc/resolv.conf in a code text block (</>)