Try

Author: bouwew

plugwise_usb/messages/requests.py

@@ -104,7 +104,7 @@ def __init__(
         self._unsubscribe_stick_response: Callable[[], None] | None = None
         self._unsubscribe_node_response: Callable[[], None] | None = None
         self._response_timeout: TimerHandle | None = None
-        self._response_future: Future[PlugwiseResponse] = self._loop.create_future()
+        self._response_future: Future[PlugwiseResponse] | None = None  # self._loop.create_future()
         self._waiting_for_response = False
 
     def __repr__(self) -> str: