diff --git a/api/core/workflow/node_factory.py b/api/core/workflow/node_factory.py
index c2c1fa15fd..63dbfee318 100644
--- a/api/core/workflow/node_factory.py
+++ b/api/core/workflow/node_factory.py
@@ -39,7 +39,6 @@ from core.workflow.nodes.agent.plugin_strategy_adapter import (
 from core.workflow.nodes.agent.runtime_support import AgentRuntimeSupport
 from core.workflow.system_variables import SystemVariableKey, get_system_text, system_variable_selector
 from core.workflow.template_rendering import CodeExecutorJinja2TemplateRenderer
-
 from graphon.entities.base_node_data import BaseNodeData
 from graphon.entities.graph_config import NodeConfigDict, NodeConfigDictAdapter
 from graphon.enums import BuiltinNodeTypes, NodeType