Fatal error: Uncaught Error: Call to undefined function date_i18n() in /home/dennis91/public_html/wp-content/plugins/events-calendar-pro/src/admin-views/recurrence/years.php:6
Stack trace:
#0 {main}
thrown in /home/dennis91/public_html/wp-content/plugins/events-calendar-pro/src/admin-views/recurrence/years.php on line 6