When trying to create an event, I get the following error in my logs:
on(:post_created) handler error : ActiveRecord::RecordInvalid : Validation failed: An event accepts only group names.
Creating the event:
Topic after thread creation:
This happens to me, when I try to create an event via the “upcoming events” calendar, and also if I try it via normal topic creation.
I could not find anything about it, so I assume it’s a bug?
Does anybody else have this problem?
Discourse version: 2026.6.0-latest
Thanks,
newbit1337
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Very odd! I can’t seem to reproduce this error… that error message points to an invalid group, but I don’t see any groups in your BBCode and status="public" should allow everyone anyway…
Can you share the raw version of the broken post? You can find it by visiting /raw/<topic_id>/<post_number> (so for example, this Meta post would be https://meta.discourse.org/raw/405428/1
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Thanks for trying @awesomerobot 
!
The raw post data did not give me any clues, but I found more details in the log, so I fed them into an AI.
The response was very helpful, and might be something for you to look into.
I do have a user called “trust_level_0” for testing purposes and this might be an issue.
After changing status to status="standalone" the event appeared. 
Thanks again, hope this helps!
newbit1337
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