Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'root'@'localhost' (using password: YES) in D:\xampp\htdocs\_test\testload\connection.php:21 Stack trace: #0 D:\xampp\htdocs\_test\testload\connection.php(21): mysqli->__construct('localhost', 'root', Object(SensitiveParameterValue), 'test_db') #1 D:\xampp\htdocs\_test\testload\connection.php(74): MySQLConnection->connect() #2 {main} thrown in D:\xampp\htdocs\_test\testload\connection.php on line 21