Changing Domain Name Broke Database

If you navigate to your database which is storing the WordPress website and look under the wp_options table. You should find under the option name siteurl and home. Change these to the new updated url for your website.

See this for more information https://codex.wordpress.org/Changing_The_Site_URL

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