The frontend login can be found in many WordPress websites, including small blogs. Usually, we place the login form in the sidebar of the website. In web applications, user interfaces are complex and different, compared to normal websites. Hence, we will implement a full page login screen as we did with registration. First, we need to update our controller with another case for login, as shown in the following code:

switch ( $control_action ) {
  // Other cases
  case 'login':
    do_action( 'wpwa_login_user' );
    break;
}

This action will be executed once the user enters /user/login in the browser URL to display the login form. The design form for login will be located in the templates directory as a separate template called login-template.php. Here is the implementation of the login form design with the necessary error messages:

<?php get_header(); ?>
<div id=' wpwa_custom_panel'>
  <?php
  if (isset($errors) && count($errors...