title: Script @php artisan package:discover handling the post-autoload-dump event returned with error code 255
body: <p>I moved my project from desk to another.<br>
  When I run <code>php artisan</code> it does not work.  </p>
  
  <p>I tried to run <code>composer update</code>, but it returns the error </p>
  
  <blockquote>
    <p>Script @php artisan package:discover handling the post-autoload-dump event returned with error code 255</p>
  </blockquote>