Problem with database!

PDOException: SQLSTATE[HY000] [1045] Access denied for user 'db_109649'@'51.83.184.21' (using password: YES) in /home/Shaadov/public_html/szcz3rbi/class/database.php:8
Stack trace:
#0 /home/Shaadov/public_html/szcz3rbi/class/database.php(8): PDO->__construct()
#1 /home/Shaadov/public_html/szcz3rbi/index2.php(7): DataBase->__construct()
#2 {main}