github pages

Monas-MacBook-Pro:htdocs mona$ git push -f origin master
fatal: 'git@github.com/lamiastella/monajalal.github.io.git' does not appear to be a git repository
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Monas-MacBook-Pro:htdocs mona$ git remote add origin git@github.com:lamiastella/monajalal.github.io.git
fatal: remote origin already exists.
Monas-MacBook-Pro:htdocs mona$ git push -f origin master
fatal: 'git@github.com/lamiastella/monajalal.github.io.git' does not appear to be a git repository
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Monas-MacBook-Pro:htdocs mona$ git status
# On branch master
nothing to commit, working directory clean
Monas-MacBook-Pro:htdocs mona$ git log
commit 641154fe1c7d6e4a363dcdc023ad7aa9a84c95ab
Author: mona <jalal@wisc.edu>
Date:   Thu Jun 9 17:48:55 2016 -0500

    my first github pages commit
Monas-MacBook-Pro:htdocs mona$