diff --git a/src/instructlab/sdg/llmblock.py b/src/instructlab/sdg/llmblock.py
index bba5403c..d7832ad2 100644
--- a/src/instructlab/sdg/llmblock.py
+++ b/src/instructlab/sdg/llmblock.py
@@ -8,6 +8,7 @@
 # Local
 from .block import Block
 from .logger_config import setup_logger
+from typing import Any, Dict, Union
 
 logger = setup_logger(__name__)
 
@@ -56,9 +57,8 @@ def _parse(self, generated_string) -> dict:
                 pattern = re.escape(start_tag) + r"(.*?)" + re.escape(end_tag)
                 all_matches = re.findall(pattern, generated_string, re.DOTALL)
                 matches[output_col] = (
-                    [match.strip() for match in all_matches] if all_matches else None
+                    [match.strip() for match in all_matches] if all_matches else []
                 )
-
         return matches
 
     def _generate(self, samples, **gen_kwargs) -> list:
@@ -123,7 +123,7 @@ def __init__(self, block_name, config_paths, client, model_id, output_cols, sele
 
     def _parse(self, generated_string):
         if self.parser_name == 'default':
-            return matches
+            return super()._parse(generated_string)
         elif self.parser_name == 'multi-line-logical-section':
             return {self.output_cols[0]: self.extract_multiline_logical_section(generated_string)}