HTTP status 404 (error) when trying to log in

define( 'WP_HOME', 'http://example.com' );
define( 'WP_SITEURL', 'http://example.com' );

Add this to your wp-config.php which you can find in the root of your website. Remember to change example.com to your URL.

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