Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'root'@'localhost' (using password: YES) in D:\xampp\htdocs\_0\06_Hotel\ac-v3.04.05\_ac-install.php:342 Stack trace: #0 D:\xampp\htdocs\_0\06_Hotel\ac-v3.04.05\_ac-install.php(342): mysqli_connect('localhost', 'root', 'jannis2020', 'ac_test') #1 D:\xampp\htdocs\_0\06_Hotel\ac-v3.04.05\_ac-install.php(105): check_db_connection() #2 {main} thrown in D:\xampp\htdocs\_0\06_Hotel\ac-v3.04.05\_ac-install.php on line 342