SSH Keys Setup

I have my Bitbucket account setup on my system.
But when i try to setup my personal github account on my system. I am unbale to do that.
Tried creating a new ssh and then saving it in my account.

Host key verification failed.  
fatal: Could not read from remote repository.  
Please make sure you have the correct access rights  
and the repository exists.

Hi @sujayvenaik,

How did you try to add your SSH key to your GitHub account? Did you already follow these directions to add it to your settings on What actions did you take to get this particular error?