Strict Standards: Declaration of CategoryTreeCategoryViewer::addSubcategoryObject() should be compatible with CategoryViewer::addSubcategoryObject(Category $cat, $sortkey, $pageLength) in /usr/home/lashtal/web/public_lashtal/w/extensions/CategoryTree/CategoryPageSubclass.php on line 14

Catchable fatal error: Argument 2 passed to CategoryViewer::__construct() must implement interface IContextSource, null given, called in /usr/home/lashtal/web/public_lashtal/w/extensions/CategoryTree/CategoryPageSubclass.php on line 9 and defined in /usr/home/lashtal/web/public_lashtal/w/includes/CategoryViewer.php on line 87