diff --git a/openhands/server/listen_socket.py b/openhands/server/listen_socket.py
index 027c24328852..81816a1325e1 100644
--- a/openhands/server/listen_socket.py
+++ b/openhands/server/listen_socket.py
@@ -15,7 +15,6 @@
 from openhands.events.serialization import event_to_dict
 from openhands.events.stream import AsyncEventStreamWrapper
 from openhands.server.routes.settings import ConversationStoreImpl, SettingsStoreImpl
-from openhands.server.session.manager import ConversationDoesNotExistError
 from openhands.server.shared import config, openhands_config, session_manager, sio
 from openhands.server.types import AppMode
 
@@ -61,13 +60,9 @@ async def connect(connection_id: str, environ, auth):
             'Settings not found', {'msg_id': 'CONFIGURATION$SETTINGS_NOT_FOUND'}
         )
 
-    try:
-        event_stream = await session_manager.join_conversation(
-            conversation_id, connection_id, settings, user_id
-        )
-    except ConversationDoesNotExistError:
-        logger.error(f'Conversation {conversation_id} does not exist')
-        raise ConnectionRefusedError(f'Conversation {conversation_id} does not exist')
+    event_stream = await session_manager.join_conversation(
+        conversation_id, connection_id, settings, user_id
+    )
 
     agent_state_changed = None
     async_stream = AsyncEventStreamWrapper(event_stream, latest_event_id + 1)
diff --git a/openhands/server/session/manager.py b/openhands/server/session/manager.py
index aa3fec0b3ce4..45b75805e412 100644
--- a/openhands/server/session/manager.py
+++ b/openhands/server/session/manager.py
@@ -24,10 +24,6 @@
 _CLEANUP_EXCEPTION_WAIT_TIME = 15
 
 
-class ConversationDoesNotExistError(Exception):
-    pass
-
-
 @dataclass
 class _SessionIsRunningCheck:
     request_id: str