diff --git a/python/sglang/srt/disaggregation/common/conn.py b/python/sglang/srt/disaggregation/common/conn.py
index 399acde06..20b1424e4 100644
--- a/python/sglang/srt/disaggregation/common/conn.py
+++ b/python/sglang/srt/disaggregation/common/conn.py
@@ -175,7 +175,11 @@ class CommonKVManager(BaseKVManager):
             )
 
     def check_status(self, bootstrap_room: int) -> KVPoll:
-        return self.request_status[bootstrap_room]
+        # return self.request_status[bootstrap_room]
+        if bootstrap_room is None:
+            return KVPoll.Failed
+        kvpoll = self.request_status.get(bootstrap_room, KVPoll.Failed)
+        return kvpoll
 
     def update_status(self, bootstrap_room: int, status: KVPoll):
         if bootstrap_room not in self.request_status: