title: Code Sign error: The identity 'iPhone Developer' doesn't match any valid certificate/private key pair in the default keychain
body: <p>How do you fix this <strong>XCode error</strong> :</p>
  
  <blockquote>
    <p>Code Sign error: The identity 'iPhone Developer' doesn't match any
    valid certificate/private key pair in the default keychain</p>
  </blockquote>