Fix

Author: NoahStapp

pymongo/asynchronous/mongo_client.py

@@ -2867,7 +2867,9 @@ async def _get_server(self) -> Server:
             self._session,
             self._operation,
             address=self._address,
-            deprioritized_servers=self._deprioritized_servers,
+            deprioritized_servers=self._deprioritized_servers
+            if self._deprioritized_servers
+            else None,
             operation_id=self._operation_id,
         )
 

pymongo/synchronous/mongo_client.py

@@ -2857,7 +2857,9 @@ def _get_server(self) -> Server:
             self._session,
             self._operation,
             address=self._address,
-            deprioritized_servers=self._deprioritized_servers,
+            deprioritized_servers=self._deprioritized_servers
+            if self._deprioritized_servers
+            else None,
             operation_id=self._operation_id,
         )