Fatal error: Uncaught Error: Access to undeclared static property Database::$connection in /home/u314747798/domains/frieni.com/public_html/lib/lib_gamification.php:9 Stack trace: #0 /home/u314747798/domains/frieni.com/public_html/tmp_v5/tmp_ranking.php(29): USER_RANKING() #1 /home/u314747798/domains/frieni.com/public_html/ranking.php(16): require_once('/home/u31474779...') #2 {main} thrown in /home/u314747798/domains/frieni.com/public_html/lib/lib_gamification.php on line 9