diff --git a/backend/data_loader.py b/backend/data_loader.py
index f0e767d..26aa79a 100644
--- a/backend/data_loader.py
+++ b/backend/data_loader.py
@@ -319,7 +319,10 @@ def get_supplementary_data(db: Session, urn: int) -> dict:
             if latest_field:
                 q = q.order_by(getattr(model, latest_field).desc())
             return q.first()
-        except Exception:
+        except Exception as e:
+            import logging
+            logging.getLogger(__name__).error("safe_query failed for %s: %s", model.__name__, e)
+            db.rollback()
             return None
 
     # Latest Ofsted inspection