I dont where this problem came from. But I believe after upgradings
Fatal error: Access level to plgFabrik_ElementDatabasejoin::_buildQueryWhere() must be public (as in class plgFabrik_Element) in /home/webintel/public_html/plugins/fabrik_element/databasejoin/databasejoin.php on line 2754
Fatal error: Access level to plgFabrik_ElementDatabasejoin::_buildQueryWhere() must be public (as in class plgFabrik_Element) in /home/webintel/public_html/plugins/fabrik_element/databasejoin/databasejoin.php on line 2754