diff --git a/src/chat/knowledge/src/utils/json_fix.py b/src/chat/knowledge/src/utils/json_fix.py
index dd91499ee..53fa8f36f 100644
--- a/src/chat/knowledge/src/utils/json_fix.py
+++ b/src/chat/knowledge/src/utils/json_fix.py
@@ -1,6 +1,7 @@
 import json
 from json_repair import repair_json
 
+
 def _find_unclosed(json_str):
     """
     Identifies the unclosed braces and brackets in the JSON string.
@@ -94,4 +95,4 @@ def new_fix_broken_generated_json(json_str: str) -> str:
         return json_str  # 如果有效则按原样返回
     except json.JSONDecodeError:
         # 如果无效，则尝试修复它
-        return repair_json(json_str)
\ No newline at end of file
+        return repair_json(json_str)