diff --git a/examples/ags/benchmark/humaneval.py b/examples/ags/benchmark/humaneval.py
index c029ad23b..ec1a3402d 100644
--- a/examples/ags/benchmark/humaneval.py
+++ b/examples/ags/benchmark/humaneval.py
@@ -71,13 +71,11 @@ async def samples_generate(mode: ModeType, result_path: str = "samples.jsonl"):
     ids = list(get_human_eval_plus().keys())
     file_lock = asyncio.Lock()
 
-    @handle_exception(
-        exception_type=Exception,
-        exception_msg="Error in solve_and_write function",
-        default_return=lambda id, *args, **kwargs: id,
-    )
     async def solve_and_write(id: str, mode: ModeType) -> Optional[str]:
-        sample_dict = await route_generate(mode, id)
+        try:
+            sample_dict = await route_generate(mode, id)
+        except Exception:
+            return id
         async with file_lock:
             async with aiofiles.open(result_path, mode="a") as f:
                 await f.write(json.dumps(sample_dict) + "\n")
diff --git a/metagpt/actions/action_node.py b/metagpt/actions/action_node.py
index ef0414ff7..a09d4a1da 100644
--- a/metagpt/actions/action_node.py
+++ b/metagpt/actions/action_node.py
@@ -539,7 +539,7 @@ class ActionNode:
         if self.schema:
             schema = self.schema
 
-        if mode == self.MODE_CODE_FILL:
+        if mode == MODE_CODE_FILL:
             result = await self.code_fill(context, function_name, timeout)
             self.instruct_content = self.create_class()(**result)
             return self
diff --git a/metagpt/utils/common.py b/metagpt/utils/common.py
index 7bed9e9b7..47f2768cd 100644
--- a/metagpt/utils/common.py
+++ b/metagpt/utils/common.py
@@ -595,15 +595,14 @@ def read_jsonl_file(jsonl_file: str, encoding="utf-8") -> list[dict]:
     return datas
 
 
-def add_jsonl_file(jsonl_file: str, data: list[dict], encoding: str = None, indent: int = 4):
+def add_jsonl_file(jsonl_file: str, data: list[dict], encoding: str = None):
     folder_path = Path(jsonl_file).parent
     if not folder_path.exists():
         folder_path.mkdir(parents=True, exist_ok=True)
 
     with open(jsonl_file, "a", encoding=encoding) as fout:
         for json_item in data:
-            json_str = json.dumps(json_item, indent=indent)
-            fout.write(json_str + "\n")
+            fout.write(json.dumps(json_item) + "\n")
 
 
 def read_csv_to_list(curr_file: str, header=False, strip_trail=True):