Fatal error: Uncaught Error: Call to undefined function untrailingslashit() in /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/apiki/timely.php on line 14

Error: Call to undefined function untrailingslashit() in /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/apiki/timely.php on line 14

Call Stack:
    0.0027     360760   1. {main}() /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/apiki/timely.php:0