Why is style.css not loading through the functions.php

The URL returned by get_stylesheet_directory_uri() does not have a slash, so you need to add one .E.g.:

wp_enqueue_style( 'style', THEMEROOT . '/style.css' );

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