Bug fixing on Socialengine 4

I need a skilled SocialEngine programmer to fix bugs in our system. The first task is to find the source og fix 1 bug. The bug show in our log file like this in many different forms. 2012-07-20T02:53:25+00:00 WARN (4): [2048] Declaration of User_Model_User::getParent() should be compatible with Core_Model_Item_Abstract::getParent($recurseType = NULL) ([…]/application/modules/User/Model/[login to view URL]) [20] All bugs with the pattern "Declaration of ??::getParent() should be compatible with Core_Model_Item_Abstract::getParent($recurseType = NULL)" need to be solved. 30$ is the maximum bid for this task. Please repeat the task in your own words when you place the bid. I will provide FTP to a development server when a bidder is chosen.