Using _s theme, menu changes do not affect header menu

You should be calling the menus by name, not description:

<?php wp_nav_menu( array( 'theme_location' => 'primary' ) ); ?>
<?php wp_nav_menu( array( 'theme_location' => 'secondary' ) ); ?>

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