fix

src/agentscope/server/launcher.py

@@ -301,11 +301,11 @@ async def shutdown_signal_handler() -> None:
             start_event.set()
         if stop_event is not None:
             stop_event.wait()
+            shutdown_cpp_server()
             logger.info(
                 f"CPP agent server [{server_id}] at {host}:{port} "
                 "stopped successfully",
             )
-            shutdown_cpp_server()
         return
 
     servicer = AgentServerServicer(