diff --git a/execution.py b/execution.py
index 1084980e..9278af35 100644
--- a/execution.py
+++ b/execution.py
@@ -51,7 +51,8 @@ class IsChangedCache:
         try:
             is_changed = _map_node_over_list(class_def, input_data_all, "IS_CHANGED")
             node["is_changed"] = [None if isinstance(x, ExecutionBlocker) else x for x in is_changed]
-        except:
+        except Exception as e:
+            logging.warning("WARNING: {}".format(e))
             node["is_changed"] = float("NaN")
         finally:
             self.is_changed[node_id] = node["is_changed"]