The event you are trying to access is invalid

After editing an event (changing the title), saving, and refreshing the browser, I clicked on the event's title and I received the error:
Message: The event you are trying to access is invalid

Not sure how editing a title of an event would cause this error. I refreshed my browser, cleared the cache in both Joomla and browser and still receive the error. Didn't see any necessity to reoptimize database tables. Anything else I should look for?

You can try to go to Events Booking -> Configuration, look at SEF router settings tab, find the config option Insert Event IDs, set it to Yes.

After that, the issue should be solved

Regards,

Tuan