Warning: mysqli_connect(): (HY000/2002): No connection could be made because the target machine actively refused it in C:\wamp64\www\conn\conn.php on line 6

Fatal error: Uncaught TypeError: mysqli_set_charset(): Argument #1 ($mysql) must be of type mysqli, bool given in C:\wamp64\www\conn\conn.php:7 Stack trace: #0 C:\wamp64\www\conn\conn.php(7): mysqli_set_charset(false, 'utf8') #1 C:\wamp64\www\programs\all_lang.php(2): require_once('C:\\wamp64\\www\\c...') #2 {main} thrown in C:\wamp64\www\conn\conn.php on line 7