ssh keygen heroku error?

hi all, getting this error on the command. Any ideas?

(blog-venv)vagrant@precise64:/vagrant/projects/microblog$ heroku keys:add ~/.ssh/id_rsa Uploading SSH public key /home/vagrant/.ssh/id_rsa... failed

! Fingerprint can't be blank ! Contents Invalid public key ! Contents Invalid public key

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Answers

Nevermind, I left out a ".pub" at the end.

correct command was:

heroku keys:add ~/.ssh/id_rsa.pub

Before, I ran the ssh keygen, and it said my ssh file was in:

/home/vagrant/.ssh/id_rsa.pub