Error occured!

Error ID:
More info: CANNOT CONNECT TO DATABASE: SQLSTATE[28000] [1045] Access denied for user 'root'@'localhost' (using password: YES)

File: /var/www/html4/classes/database_mysql.php   Line: 22
File: /var/www/html4/classes/database.php   Line: 199
File: /var/www/html4/pages/news.php   Line: 79
File: /var/www/html4/system/load.page.php   Line: 7
File: /var/www/html4/index.php   Line: 40