Fix two minor bugs related to factor extraction.

rdagent/components/coder/factor_coder/utils.py

@@ -22,7 +22,7 @@ def get_data_folder_intro():
     It is for preparing prompting message.
     """
     content_l = []
-    for p in Path(FACTOR_IMPLEMENT_SETTINGS.data_folder).iterdir():
+    for p in Path(FACTOR_IMPLEMENT_SETTINGS.data_folder_debug).iterdir():
         if p.name.endswith(".h5"):
             df = pd.read_hdf(p)
             # get  df.head() as string with full width

rdagent/scenarios/qlib/factor_experiment_loader/pdf_loader.py

@@ -183,7 +183,7 @@ def __extract_factors_formulation_from_content(
         except json.JSONDecodeError:
             parse_success = False
         if ret_json_str is None or not parse_success:
-            current_user_prompt = "Your response didn't follow the instruction might be wrong json format. Try again."
+            current_user_prompt = "Your response didn't follow the instruction might be wrong json format.\nRemember not to add any dots (...) in the json string which will cause json parse error!!!\nTry again."
         else:
             for name, formulation_and_description in ret_dict.items():
                 if name in factor_dict: