Hey Guys,
We are also facing the same issue, it means plugin need to modify, we just deactivate the plugin and website is back now.
atal error: Uncaught Error: Cannot call abstract method ActionScheduler_Logger::init() in /wp-content/plugins/mailchimp-for-woocommerce/includes/vendor/action-scheduler/classes/data-stores/ActionScheduler_DBLogger.php:102 Stack trace: #0 /home/xxx952asd/wp-includes/class-wp-hook.php(286): ActionScheduler_DBLogger->init() #1
