I have got this error
https://stackideas.com/docs/easysocial/administrators/easySocial-error-messages/invalid-event-category-id
And it is not possible to add event from frontend. it worked before creation of new categories.
How to reproduce? Sign in go to frontend events. Then click create event and select category. After selection of category I got 404.
It seems to me as Joomla SEF URLs problem...Can you help pls?
Thanks.
Pavol