Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'ai_nav_user'@'localhost' (using password: YES) in /www/wwwroot/ai_navigation/includes/classes/Database.php:18 Stack trace: #0 /www/wwwroot/ai_navigation/includes/classes/Database.php(18): mysqli->__construct() #1 /www/wwwroot/ai_navigation/includes/classes/Database.php(7): Database->connect() #2 /www/wwwroot/ai_navigation/includes/classes/Database.php(12): Database->__construct() #3 /www/wwwroot/ai_navigation/index.php(6): Database::getInstance() #4 {main} thrown in /www/wwwroot/ai_navigation/includes/classes/Database.php on line 18