with session issue

Author: Kabilan-16

src/lfx/src/lfx/graph/utils.py

@@ -370,7 +370,7 @@ async def log_vertex_build(
             if db_service is None:
                 return
 
-            async with db_service._with_session() as session:  # noqa: SLF001
+            async with db_service.with_session() as session:  # noqa: SLF001
                 await crud_log_vertex_build(session, vertex_build)
 
             # Note: emit_vertex_build_event is NOT called here because it needs