Have a problem setting domain name to heroku

i have bought a domain at godaddy.com, in that i have deleted all the
remaining links and set cname as www to .herokuapp.com, and added
domain name to the heroku app, but after doing so i am getting an error

"This is probably not the site you are looking for!
You attempted to reach www..com, but instead you actually
reached a server identifying itself as**.herokuapp.com*. This may be
by a misconfiguration on the server or by something more serious. An
attacker on your network could be trying to get you to visit a fake
potentially harmful) version of www..com.
You should not proceed, especially if you have never seen this warning
before for this site. "

what am i doing wrong …

Thank you…

Did you find a solution for that issue?