Error occured!

Error ID:
More info: CANNOT CONNECT TO DATABASE: SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: YES)

File: C:\xampp\htdocs\classes/database_mysql.php Line: 22
File: C:\xampp\htdocs\classes/database.php Line: 189
File: C:\xampp\htdocs\pages/worlds.php Line: 3
File: C:\xampp\htdocs\system/load.page.php Line: 7
File: C:\xampp\htdocs/index.php Line: 42