Why the wp_localize_script() does not work correct in my case? ( /wp-admin/admin-ajax.php 400 (Bad Request) )

Why the wp_localize_script() does not work correct in my case? ( /wp-admin/admin-ajax.php 400 (Bad Request) )

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