title: How to fix Composer error: "could not scan for classes inside dir"?
body: <p>I'm trying to install composer in terminal by entering this command:</p>
  
  <pre><code>php composer.phar install
  </code></pre>
  
  <p>it starts to install required packages but I'm getting this error type:</p>
  
  <blockquote>
    <p>[RuntimeException]<br>
    Could not scan for classes inside "app/commands" which does not appear to be a file nor a folder  </p>
  </blockquote>
  
  <p>How can I overcome this issue?</p>