title: Why rbenv does not work on Mac OS Catalina
body: <p>I'm trying to run a Ruby on Rails project which has the version <code>2.4.1</code>and my system is <code>2.6.x</code>.
  What I did was install via Rbenv the old version of Ruby then I did the following commands:</p>
  
  <pre><code>rbenv global 2.4.1 -&gt; to change global Ruby version
  
  ruby -v 
  ruby 2.6.5p114
  
  rbenv global
  2.4.1
  </code></pre>
  
  <p>So there is something wrong as I would like to use 2.4.1 but seems not working that. I'm unable to start the bundle as it is saying I don't have 2.4.1 installed.</p>
  
  <p>I need a solution to Mac OS Catalina as I did as I found online but nothing works and cannot be started the project. </p>