Catchable fatal error: Argument 1 passed to Usercontrol_Model_Mapper_User::getModel() must be an instance of Zend_Db_Table_Row, null given, called in /_sdc/skypoint/application/core/usercontrol/models/mappers/User.php on line 33 and defined in /_sdc/skypoint/application/core/usercontrol/models/mappers/User.php on line 74