Unable to change WordPress language (WordPress 4.2.2)

You can set the language through your admin panel, go to ‘Settings’ > ‘General’, Scroll down and you will find an option for choosing the language.

This is a user friendly option to change the language.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)