fix extensive scores with consensus decision making

Author: jonas-becker

mallm/evaluation/evaluator.py

@@ -257,9 +257,11 @@ def add_scores_extensive(self) -> None:
             references = item.get("references", [])
             dataset_id = item.get("datasetId", None)
             votes_each_turn = item.get("votesEachTurn", None)
-            alterations: dict[str, Any] = votes_each_turn[
-                max(votes_each_turn.keys())
-            ].get("alterations", None)
+            alterations = None
+            if votes_each_turn:
+                alterations: dict[str, Any] = votes_each_turn[
+                    max(votes_each_turn.keys())
+                ].get("alterations", None)
             for mem in item.get("globalMemory", []):
                 solution = mem.get("solution", "")
                 if solution and alterations: