Fatal error: Uncaught mysqli_sql_exception: Access denied for user ''@'localhost' (using password: NO) in C:\xampp\htdocs\BK\bateriasec\public\jqx\demos\Showcase\personalsales\data.php:5 Stack trace: #0 C:\xampp\htdocs\BK\bateriasec\public\jqx\demos\Showcase\personalsales\data.php(5): mysqli->__construct('', '', '', '') #1 {main} thrown in C:\xampp\htdocs\BK\bateriasec\public\jqx\demos\Showcase\personalsales\data.php on line 5