Fatal error: Uncaught Error: Interface 'WP_Rocket\Event_Management\Subscriber_Interface' not found in /home/xbeta/public_html/wp-rocket/inc/classes/subscriber/class-heartbeat-subscriber.php:13 Stack trace: #0 {main} thrown in /home/xbeta/public_html/wp-rocket/inc/classes/subscriber/class-heartbeat-subscriber.php on line 13