восстановление пароля

при попытке восстановление выходят сообщения 

Warning: mysqli_connect(): (HY000/2002): Connection timed out in /var/www/vhosts/passrecovery.shareman.tv/html/Connection.php on line 47

Warning: mysqli_error() expects parameter 1 to be mysqli, bool given in /var/www/vhosts/passrecovery.shareman.tv/html/Connection.php on line 48

Recoverable fatal error: Object of class Connection could not be converted to string in /var/www/vhosts/passrecovery.shareman.tv/html/index.php on line 77