Warning: mysqli::__construct(): (HY000/2002): Connection refused in /var/www/rk.nuu.uz/classes/database.class.php on line 30

Warning: mysqli::set_charset(): Couldn't fetch mysqli in /var/www/rk.nuu.uz/classes/database.class.php on line 31

Fatal error: Uncaught Error: Call to undefined function mysql_connect_error() in /var/www/rk.nuu.uz/classes/database.class.php:35 Stack trace: #0 /var/www/rk.nuu.uz/classes/database.class.php(23): Database->__construct() #1 /var/www/rk.nuu.uz/index.php(52): Database::getInstance() #2 {main} thrown in /var/www/rk.nuu.uz/classes/database.class.php on line 35