I suspect these are caused by QuickForm session errors. However, they can be difficult to reproduce in 4.7 (they were pretty common in 4.6 because of the cleanup jobs).
When this error happens, we should redirect back to the event page, with a session timeout message.
I suspect these are caused by QuickForm session errors. However, they can be difficult to reproduce in 4.7 (they were pretty common in 4.6 because of the cleanup jobs).
When this error happens, we should redirect back to the event page, with a session timeout message.
Example: