Im working on a project and try to get the last element of a DataList:

  $object->Childeren()->last();

If the list is empty, I get the following error:

[User Error] Uncaught InvalidArgumentException: SQLQuery::setLimit() only takes positive values

I have attached an image with the full output.

Is it possible that this is a bug or do I realy have to check if the list is empty before i call last()?

Might be good to write up a test case and submit a fix.