Hi all,
The calendar for all the ~1200 of my users at awg.osdr.space is down
I saw there was some sort of new release?
Here is what me and everyone else is seeing.
Please help ASAP
I resolved it. Posting the fix for anyone else hitting this after updating to 2026.8.
Root cause: Our site (Communiteq-hosted) updated to Discourse 2026.8.0-latest.1, which bundles Calendar and Events into core. After the update, the Events plugin showed as Enabled at admin/plugins, but the discourse post event enabled site setting was off. This caused a server-side 404 on /discourse-post-event/events.json and the “page doesn’t exist” error on /upcoming-events for all users.
Fix: Re-enable discourse post event enabled in site settings. Calendar and all events repopulated immediately. No data loss since events live in topic posts.
Flagging for the team: the enabled state of this setting may not be carrying over during the core-bundling migration. Worth checking whether other sites updating to 2026.8 will hit the same thing.
That does not seem to be hosted by Communiteq?
Also, the calendar plugin has been bundled into core since over a year.
Indeed, it seems this site is hosted by discourse.org
Thanks for reporting this @Ryan_Scott and sorry for the confusion, we can look into this.
Fortunately not a complicated issue — we’ve identified and applied a fix for this that will prevent it from happening as sites update.
I think the calendar plugin was renamed to “events” recently. That’s why it might seem like a new plugin.