diff --git a/Kafka/TaskContainer.php b/Kafka/TaskContainer.php
index b7b660c4..26afdb95 100644
--- a/Kafka/TaskContainer.php
+++ b/Kafka/TaskContainer.php
@@ -18,7 +18,7 @@ class TaskContainer extends BaseObject
     private array $_topics = [];
 
 
-    private static TaskContainer $container;
+    private static ?TaskContainer $container = null;
 
 
     /**