title: spatie/pdf-to-image 1.8.2 requires ext-imagick Error in composer install
body: <p>I am just picking up one legacy laravel project by using composer cli.
  I executed <code>composer install</code> but it's saying one Error <code>spatie/pdf-to-image 1.8.2 requires ext-imagick Error</code>.
  I couldn't figure it out.
  I guess it's because imagick extension wasn't set properly in php.ini.
  Anybody has ever faced on this kind of error before?
  Thank you in advance.</p>