To disable the author page from WordPress and redirect using 301 redirection, simply copy and paste the following code into your functions.php file:

 

// Redirect Author Page to Home

function vpsb_redirect_author_page() {
  global $wp_query;
  if ( is_author() ) {
    // Redirect to home, set status to 301 permanent
    wp_redirect(get_option('home'), 301); 
    exit; 
  }
}
add_action('template_redirect', ‘vpsb_redirect_author_page');

If you are using Yoast SEO plugin, you can disable it from admin area > SEO > Search Appearence > Archives > Author archives > Disabled