title: Gitlab key format issue
body: <p>I am facing a strange situation where I am using gitlab account to handle my code. I am using ssh protocol to access the repo. I am able to pull the code but I am receiving the following error while I try to push the code. This could be something silly on my side. But <em>I have the keys stored in my gitlab profile</em> and <em>able to</em> use it to <em>pull the code</em>.</p>
  
  <p><strong>Error :</strong></p>
  
  <pre><code>$ git push origin master
  key_load_public: invalid format
  Enter passphrase for key '/c/Users/username/.ssh/id_rsa':
  Access denied.
  fatal: Could not read from remote repository.
  
  Please make sure you have the correct access rights
  and the repository exists.
  </code></pre>