Some PHP 8+ Issues

[Hamborn]

Hi guys.
PHP 8+ seems to have Problems with the class-registry:
Warning: The magic method Members\Registry::__wakeup() must have public visibility in
/homepages/31/d578283096/htdocs/wp-content/plugins/wp-permission-manager/inc/class-registry.php on line 68

i temporarily changed
private function __wakeup() {}
to
public function __wakeup() {}
in my local php files.

I dont get why this is mandatory now, but i found this:
https://stackoverflow.com/questions/8231090/why-do-php-magical-methods-have-to-be-public

Cheers from Germany
Christian