Subscription enumeration, tweaks

src/Http/Server.php

@@ -30,8 +30,8 @@ class Server
     private SplObjectStorage $webSocketClients;
 
     private TopicManager $topicManager;
-
-    private Logger|LoggerInterface $logger;
+    
+    private Logger $logger;
 
     private ResponseMiddleware $responseMiddleware;
     private SecurityMiddleware $securityMiddleware;
@@ -73,7 +73,7 @@ class Server
         $this->server->listen($socket);
     }
 
-    private function createLogger(): LoggerInterface
+    private function createLogger(): Logger
     {
         $handlers = [
             new StreamHandler(STDOUT)