PHP 8 warnings in v7.1.2

After upgrading to PHP 8.0, I’m experiencing these warnings:

PHP message: PHP Warning:  The magic method Theme_My_Login::__wakeup() must have public visibility in [...]wp-content/plugins/theme-my-login/includes/class-theme-my-login.php on line 374
PHP message: PHP Warning:  The magic method Theme_My_Login_Admin::__wakeup() must have public visibility in [...]/wp-content/plugins/theme-my-login/admin/class-theme-my-login-admin.php on line 157

Thanks for your attention.