[Compat] PHP 7.4 Warning: The magic method Revisr::__wakeup() must have public visibility

[XVII]

I assume this is a warning prior to PHP 8.0

PHP Warning: The magic method Revisr::__wakeup() must have public visibility in /srv/www/wp-content/plugins/revisr/revisr.php on line 113

when running wp-cron.php

[XVII]

This almost appears to be a class hardening tactic?

[WeeSee]

I have the same issue an posted a forum question:

https://wordpress.org/support/topic/php8-not-supported/

Is this repo still maintained actively?