Fatal error: Uncaught PDOException: SQLSTATE[HY000] [1698] Access denied for user 'root'@'localhost' in /var/www/html/DatabaseService.php:13 Stack trace: #0 /var/www/html/DatabaseService.php(13): PDO->__construct() #1 /var/www/html/configure.inc.php(31): DatabaseService::getInstance() #2 /var/www/html/index.php(20): include_once('/var/www/html/c...') #3 {main} thrown in /var/www/html/DatabaseService.php on line 13