Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'root'@'localhost' (using password: NO) in /opt/bitnami/sizechart/app/config/database.php:36 Stack trace: #0 /opt/bitnami/sizechart/app/config/database.php(36): mysqli->__construct() #1 /opt/bitnami/sizechart/app/config/database.php(63): Database->__construct() #2 /opt/bitnami/sizechart/app/models/ShoeSizeModel.php(8): Database::getInstance() #3 /opt/bitnami/sizechart/app/controllers/ShoeSizeController.php(17): ShoeSizeModel->__construct() #4 /opt/bitnami/sizechart/index.php(46): ShoeSizeController->__construct() #5 /opt/bitnami/sizechart/app/config/router.php(140): {closure:/opt/bitnami/sizechart/index.php:44}() #6 /opt/bitnami/sizechart/index.php(474): Router->dispatch() #7 {main} thrown in /opt/bitnami/sizechart/app/config/database.php on line 36