Поправил сигнатуру

src/Service/Transformer/Request/Headers/Header.php

@@ -12,6 +12,6 @@ class Header extends ServiceMeta
         public ?string $default = null,
         public array $tags = ['request_headers']
     ) {
-        parent::__construct($default, $tags);
+        parent::__construct($tags);
     }
 }

src/Service/Transformer/Request/Headers/UserAgent.php

@@ -7,5 +7,10 @@ use Rinsvent\TransformerBundle\Service\Transformer\Request\ServiceMeta;
 #[\Attribute]
 class UserAgent extends ServiceMeta
 {
-
+    public function __construct(
+        public ?string $default = null,
+        public array $tags = ['default']
+    ) {
+        parent::__construct($tags);
+    }
 }

src/Service/Transformer/Request/Server/Server.php

@@ -12,6 +12,6 @@ class Server extends ServiceMeta
         public ?string $default = null,
         public array $tags = ['request_server']
     ) {
-        parent::__construct($default, $tags);
+        parent::__construct($tags);
     }
 }

src/Service/Transformer/Request/ServiceMeta.php

@@ -7,11 +7,4 @@ use Rinsvent\Transformer\Transformer\Meta;
 abstract class ServiceMeta extends Meta
 {
     public const TYPE = 'service';
-
-    public function __construct(
-        public ?string $default = null,
-        public array $tags = ['default']
-    ) {
-        parent::__construct($tags);
-    }
 }