Own Login CSS doesn’t work

I can’t use the WP Cerber Plugin anymore, because we are using an own login stylesheet. I use a child the with an own functions PHP and I load an own stylesheet for the login page with:

// Update CSS within for Login Page
function my_custom_login() {
echo ‘<link rel=”stylesheet” type=”text/css” href=”‘ . get_stylesheet_directory_uri() . ‘/login.css” />’;
}
add_action(‘login_head’, ‘my_custom_login’);

Since the last update op WP Cerber this doesn’t work anymore. This is absolutely necessary for our websites so I can’t use your plugin anymore. Please fix that bug!!!