Warning: include(config.php): failed to open stream: No such file or directory in C:\xampp\htdocs\index.php on line 3

Warning: include(): Failed opening 'config.php' for inclusion (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\index.php on line 3
<br /> <b>Notice</b>: Undefined variable: __SITE_NAME in <b>C:\xampp\htdocs\includes\header.php</b> on line <b>6</b><br />
<br /> <b>Notice</b>: Undefined variable: __SITE_NAME in <b>C:\xampp\htdocs\index.php</b> on line <b>312</b><br />

Notice: Undefined variable: __MYSQL_HOST in C:\xampp\htdocs\pages\how_to_donate.php on line 4

Notice: Undefined variable: __MYSQL_USER in C:\xampp\htdocs\pages\how_to_donate.php on line 4

Notice: Undefined variable: __MYSQL_PASS in C:\xampp\htdocs\pages\how_to_donate.php on line 4

Notice: Undefined variable: __MYSQL_DB_NEWS in C:\xampp\htdocs\pages\how_to_donate.php on line 4

Warning: mysqli_connect(): (HY000/1045): Access denied for user ''@'localhost' (using password: NO) in C:\xampp\htdocs\pages\how_to_donate.php on line 4
Gagal koneksi ke Database Web (MySQL): Access denied for user ''@'localhost' (using password: NO)