I have updated our install of Phabricator last night to the most recent stable version and now receive the following error when trying to create an event on the calendar:

UNRECOVERABLE FATAL ERROR <<<

Call to undefined method PhabricatorCalendarEventRecurringTransaction::getIsNewObject()

/var/www/html/phabricator/src/applications/calendar/xaction/PhabricatorCalendarEventRecurringTransaction.php:25

┻━┻ ︵ ¯\_(ツ)_/¯ ︵ ┻━┻

I'm aware this is a prototype application but it seems to be to big of an issue not to bring it up. Please note that we hadn't last updated since early February. If any further information is needed, then let me know.