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vendor/symfony/routing/Loader/DirectoryLoader.php

@@ -17,7 +17,7 @@ use Symfony\Component\Routing\RouteCollection;
 
 class DirectoryLoader extends FileLoader
 {
-    public function load(mixed $file, string $type = null): mixed
+    public function load(mixed $file, ?string $type = null): mixed
     {
         $path = $this->locator->locate($file);
 
@@ -43,7 +43,7 @@ class DirectoryLoader extends FileLoader
         return $collection;
     }
 
-    public function supports(mixed $resource, string $type = null): bool
+    public function supports(mixed $resource, ?string $type = null): bool
     {
         // only when type is forced to directory, not to conflict with AttributeLoader