Catchable fatal error: Argument 1 passed to Joomla\Utilities\ArrayHelper::sortObjects() must be of the type array, boolean given, called in /homepages/18/d297863082/htdocs/clickandbuilds/Joomla/FVC_08-2017_AC/components/com_content/models/category.php on line 465 and defined in /homepages/18/d297863082/htdocs/clickandbuilds/Joomla/FVC_08-2017_AC/libraries/vendor/joomla/utilities/src/ArrayHelper.php on line 489