Fatal error: Uncaught Error: Class 'Twig_Extension' not found in /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/vendor/twig/Extension/Staging.php on line 19

Error: Class 'Twig_Extension' not found in /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/vendor/twig/Extension/Staging.php on line 19

Call Stack:
    0.0001     360512   1. {main}() /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/vendor/twig/Extension/Staging.php:0