Erro ao conectar ao banco de dados!

PDOException: SQLSTATE[HY000] [1045] Access denied for user 'sested59_provao'@'sh-pro60.hostgator.com.br' (using password: YES) in /home2/sested59/sested-eja.com.br/sistema/conexao.php:21 Stack trace: #0 /home2/sested59/sested-eja.com.br/sistema/conexao.php(21): PDO->__construct('mysql:dbname=se...', 'sested59_provao', Object(SensitiveParameterValue)) #1 /home2/sested59/sested-eja.com.br/cabecalho.php(2): require_once('/home2/sested59...') #2 /home2/sested59/sested-eja.com.br/index.php(2): require_once('/home2/sested59...') #3 {main}