title: "Fingerprint cannot be generated" when adding new SSH key to gitlab account
body: <p>I'm trying to add a new ssh key to my GitLab account but I keep getting following errors:</p>
  
  <pre><code>Fingerprint cannot be generated
  Key type is forbidden. Must be RSA, ECDSA, or ED25519
  </code></pre>
  
  <p>What I've done is gone to Cmder and entered the commands</p>
  
  <pre><code>ssh-keygen
  cat ~/.ssh/id_rsa.pub
  </code></pre>
  
  <p>Then I've copied the key into my school GitLab account trough a web browser and got the errors mentioned above.</p>
  
  <p>Why is this happening, and how can I successfully upload my key?</p>