title: Symfony 4.3: User Deprecated: The Symfony\Bundle\TwigBundle\Loader\FilesystemLoader class is deprecated since version 4.3 and will be removed in 5.0 …
body: <p>After upgrading to Symfony 4.3, I'm getting the following 22 deprecation warnings:</p>
  <blockquote>
  <p>User Deprecated: The Symfony\Bundle\TwigBundle\Loader\FilesystemLoader class is deprecated since version 4.3 and will be removed in 5.0; use Twig notation for templates instead.</p>
  <p>User Deprecated: The <strong>&quot;templating.locator&quot;</strong> service is deprecated since Symfony 4.3 and will be removed in 5.0.</p>
  <p>User Deprecated: The Symfony\Bundle\FrameworkBundle\Templating\Loader\TemplateLocator class is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  <p>User Deprecated: The <strong>&quot;templating.name_parser&quot;</strong> service is deprecated since Symfony 4.3 and will be removed in 5.0.</p>
  <p>User Deprecated: The Symfony\Bundle\FrameworkBundle\Templating\TemplateNameParser class is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  <p>User Deprecated: Using the <strong>&quot;templating&quot;</strong> service is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  <p>User Deprecated: The Symfony\Bridge\Twig\TwigEngine class is deprecated since version 4.3 and will be removed in 5.0; use \Twig\Environment instead.</p>
  <p>User Deprecated: The Symfony\Bundle\FrameworkBundle\Templating\EngineInterface interface is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  <p>User Deprecated: The Symfony\Bundle\TwigBundle\TwigEngine class is deprecated since version 4.3 and will be removed in 5.0; use \Twig\Environment instead.</p>
  <p>2 times: The <strong>&quot;framework.templating&quot;</strong> configuration is deprecated since Symfony 4.3. Configure the <strong>&quot;twig&quot;</strong> section provided by the Twig Bundle instead.</p>
  <p>Enabling the Templating component is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  <p>The <strong>&quot;templating.cache_warmer.template_paths&quot;</strong> service is deprecated since Symfony 4.3 and will be removed in 5.0.</p>
  <p>The Symfony\Bundle\FrameworkBundle\CacheWarmer\TemplatePathsCacheWarmer class is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  <p>The <strong>&quot;templating.finder&quot;</strong> service is deprecated since Symfony 4.3 and will be removed in 5.0.</p>
  <p>The Symfony\Bundle\FrameworkBundle\CacheWarmer\TemplateFinder class is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  <p>The Symfony\Bundle\FrameworkBundle\CacheWarmer\TemplateFinderInterface interface is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  <p>The <strong>&quot;templating.locator&quot;</strong> service is deprecated since Symfony 4.3 and will be removed in 5.0.</p>
  <p>The Symfony\Bundle\FrameworkBundle\Templating\Loader\TemplateLocator class is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  <p>The Symfony\Bundle\FrameworkBundle\Templating\TemplateReference class is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  <p>The <strong>&quot;templating.name_parser&quot;</strong> service is deprecated since Symfony 4.3 and will be removed in 5.0.</p>
  <p>The Symfony\Bundle\FrameworkBundle\Templating\TemplateNameParser class is deprecated since version 4.3 and will be removed in 5.0; use Twig instead.</p>
  </blockquote>