title: Symfony 5 LiipImagineBundle images not created into the cache
body: <p>With Symfony 5, I try to use LiipImagineBundle which correctly worked with Symfony 4.4. Now, images aren't created into the cache designated by the configuration.</p>
  <p>So the images are no longer displayed and I get these kind of errors:</p>
  <blockquote>
  <p>GET<br />
  <a href="http://127.0.0.1:8000/media/cache/resolve/thumb/images/no-photo.jpg" rel="nofollow noreferrer">http://127.0.0.1:8000/media/cache/resolve/thumb/images/no-photo.jpg</a><br />
  404 (Not Found)</p>
  </blockquote>
  <p>This is my LiipImagine configuration:</p>
  <pre><code>liip_imagine:
    resolvers:
      default:
        web_path:
          web_root: &quot;%kernel.project_dir%/public&quot;
          cache_prefix: &quot;images/cache&quot;
    filter_sets:
      thumb:
       quality: 75
       filters:
         thumbnail:
           size: [360, 360]
           mode: outbound
           allow_upscale: true
      medium:
       quality: 75
       filters:
         thumbnail:
           size: [500, 500]
           mode: outbound
           allow_upscale: true
      tiny:
       quality: 75
       filters:
         thumbnail:
           size: [35, 35]
           mode: outbound
  </code></pre>