diff --git a/api/core/model_runtime/utils/helper.py b/api/core/model_runtime/utils/helper.py
index 3035e015a3..b05bea1f80 100644
--- a/api/core/model_runtime/utils/helper.py
+++ b/api/core/model_runtime/utils/helper.py
@@ -1,5 +1,6 @@
 import pydantic
 from pydantic import BaseModel
+
 from core.model_runtime.entities.message_entities import PromptMessageContentUnionTypes