Changing the language in Site Language does nothing

Make sure you don’t have a custom language set for your user because now in WordPress you can change it globally and per-user: https://cl.ly/jNvo – it’s possible that setting may be overriding the global one.

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