Im getting all children of page node. and then looping them to get the database document item, but then I get an error saying that the node dosn't exsist and if I look in backend the node is no longer there so it's deleted long ago but still show in the list im getting.

My code

List<umbraco.interfaces.INode> currentNodes = parentNode.ChildrenAsList.OrderBy(x => x.Name).ToList();

foreach(var item in currentNodes)
{
       Document document = new Document(item.Id);
       // do some stuff to document
} 

I have tried republishing site because I was thinking some kind of cash problem. but that didn't help.