[How To] - Fix "Offending RSA key" error

Occasionally, when you try to SSH to some server, you may run into the following Offending RSA key error:

To fix this issue, you simply need to edit the file ~/.ssh/known_hosts and remove the particular line that caused the error. In the above example, the following line is crucial:

It means that the offending key is in line 10 of the known_hosts file. So just open the file, delete everything on line 10, save the file and you're done :). 

Try the SSH command again! Everything should be working normally now.