title: Where do I need to put the yaml file for VichUploaderBundle in Symfony 4?
body: <p>I am having trouble installing the bundle. I have followed the instruction in the document. I have successfully installed the package as I saw the vich folder created in the vendor folder. And I have created and put the <code>vich_uploader.yaml</code> file inside <code>config/packages</code> folder. However, when I got to the end of the second step <a href="https://github.com/dustin10/VichUploaderBundle/blob/master/Resources/doc/usage.md#step-2-link-the-upload-mapping-to-an-entity" rel="nofollow noreferrer">here</a> and ran the console clear cache command, I got the errors</p>
  
  <blockquote>
    <p>In FileLoader.php line 166:</p>
    
    <p>There is no extension able to load the configuration for
    "vich_uploader"... Looked for namespace "vich_uploader",
    found "framework", "web_server", "twig"   , "sensio_framework_extra",
    "maker", "web_profiler", "monolog", "debug", "doctrine_cache",
    "doctrine", "doctrine_migrations", "security" in ...</p>
    
    <p>In YamlFileLoader.php line 666:</p>
    
    <p>There is no extension able to load the configuration for
    "vich_uploader"... Looked for namespace "vich_uploader",
    found "framework", "web_server", "twig"   , "sensio_framework_extra",
    "maker", "web_profiler", "monolog", "debug", "doctrine_cache",
    "doctrine", "doctrine_migrations", "security"</p>
  </blockquote>
  
  <p>When I removed that yaml file, everything works fine again.</p>