Failed to reactivate

Error after latest update upon reactivate

Fatal error: Uncaught Error: Class ‘ES_Queue’ not found in /var/www/wordpress/wp-content/plugins/email-subscribers/lite/includes/class-email-subscribers.php:822 Stack trace: #0 /var/www/wordpress/wp-content/plugins/email-subscribers/email-subscribers.php(208): Email_Subscribers::instance() #1 /var/www/wordpress/wp-content/plugins/email-subscribers/email-subscribers.php(213): ES() #2 /var/www/wordpress/wp-admin/update.php(96): include(‘/var/www/wordpr…’) #3 {main} thrown in /var/www/wordpress/wp-content/plugins/email-subscribers/lite/includes/class-email-subscribers.php on line 822
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