Fatal error: Uncaught Error: Call to undefined function admin_url() in /mysite/web/wp-content/plugins/the-events-calendar/common/src/admin-views/troubleshooting/notice.php:10 Stack trace: #0 {main} thrown in /mysite/web/wp-content/plugins/the-events-calendar/common/src/admin-views/troubleshooting/notice.php on line 10