I've noticed today that the session expired (after x days) and the site showed me as already logged in, but no discussions were showing. Clicking on Flarum's "reload icon" didn't help either.
I had to reload the page, then it showed that I had to re-login.
Two members told me that they even got a 404-page (one told me that she got a "page cannot be found").
What can it be?
P.S. I configured Flarum so that only logged in users can see the content.