Connection to database failed.

Connection to database failed.

dbExpress Error: Invalid
Username/Password

cara membetulkannya
mysql -u root -p
SET PASSWORD FOR 'root'@'localhost' = OLD_PASSWORD('r00tp45sw0rd');
UPDATE mysql.user SET Password = OLD_PASSWORD('r00tp45sw0rd') WHERE Host = 'localhost' AND User = 'root';
FLUSH PRIVILEGES;