Merge branch '6.4' into 7.0

* 6.4:
  [Finder] Fix initial directory is opened twice
  typo fix
  Fix test
  Fix some return types in tests

Author: nicolas-grekas

DependencyInjection/RegisterListenersPass.php

@@ -88,7 +88,7 @@ public function process(ContainerBuilder $container): void
 
                     if (null !== ($class = $container->getDefinition($id)->getClass()) && ($r = $container->getReflectionClass($class, false)) && !$r->hasMethod($event['method'])) {
                         if (!$r->hasMethod('__invoke')) {
-                            throw new InvalidArgumentException(sprintf('None of the "%s" or "__invoke" methods exist for the service "foo". Please define the "method" attribute on "kernel.event_listener" tags.', $event['method'], $id));
+                            throw new InvalidArgumentException(sprintf('None of the "%s" or "__invoke" methods exist for the service "%s". Please define the "method" attribute on "kernel.event_listener" tags.', $event['method'], $id));
                         }
 
                         $event['method'] = '__invoke';