Sorry, I don’t know what that really means. 
However, by looking at the log error stack, I’m guessing it’s caused by the second error I mentioned earlier:
Line 230: [2017.07.13-22.58.31:334] 0]LogBlueprint:Error: RemoveNodeAndPromoteChildren(SCS_Node_32) failed to find a parent node in Blueprint /Game/House.House, attaching children to the root
hence, “Ensure condition failed: ParentNode”
Could you perhaps fix the House.House missing parent issue, then try packaging again?