Fix init

Author: fealho

sdgym/result_explorer/result_explorer.py

@@ -44,7 +44,7 @@ def _resolve_effective_path(path, modality):
 class ResultsExplorer:
     """Explorer for SDGym benchmark results, supporting both local and S3 storage."""
 
-    def __init__(self, path, modality=None, aws_access_key_id=None, aws_secret_access_key=None):
+    def __init__(self, path, modality, aws_access_key_id=None, aws_secret_access_key=None):
         self.path = path
         self.modality = modality
         self.aws_access_key_id = aws_access_key_id