symfony
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+5Lines changed: 5 additions & 0 deletions b/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
Copy file name to clipboardExpand all lines: src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+5Lines changed: 5 additions & 0 deletions
@@ -16,6 +16,7 @@
 use Http\Client\HttpClient;
 use Psr\Cache\CacheItemPoolInterface;
 use Psr\Container\ContainerInterface as PsrContainerInterface;
+use Psr\EventDispatcher\EventDispatcherInterface as PsrEventDispatcherInterface;
 use Psr\Http\Client\ClientInterface;
 use Psr\Log\LoggerAwareInterface;
 use Symfony\Bridge\Monolog\Processor\DebugProcessor;
@@ -154,6 +155,10 @@ public function load(array $configs, ContainerBuilder $container)
         $loader->load('fragment_renderer.xml');
         $loader->load('error_catcher.xml');
 
+        if (interface_exists(PsrEventDispatcherInterface::class)) {
+            $container->setAlias(PsrEventDispatcherInterface::class, 'event_dispatcher');
+        }
+
         $container->registerAliasForArgument('parameter_bag', PsrContainerInterface::class);
 
         if (class_exists(Application::class)) {