WordPress Plugin: Restores all the default roles and caps in the WordPress

tinygod-recover-roles.php

<?php
/**
 * Recover or Reset the default WordPress user roles and caps
 * Install it as a WordPress plugin, activate it and deativate. That's it.
 *
 * @wordpress-plugin
 * Plugin Name: tinyGod Recover User Roles
 * Plugin URI: 
 * Author: luistinygod
 * Author URI: https://tinygod.pt
 * Version: 1.0.0
 * Description: Recover User Roles
 * Text Domain: rur
 * Domain Path: /languages
 * License: GPL-2.0+
 * License URI: http://www.gnu.org/licenses/gpl-2.0.txt
 */

defined( 'ABSPATH' ) || exit;

if ( !function_exists( 'populate_roles' ) ) {
  require_once( ABSPATH . 'wp-admin/includes/schema.php' );
}

populate_roles();

I am now seeing my usernames in my site when I am trying to select an author for my post