I’ve just gotten this error when I pressed the login button in my website. I think I may have also gotten it at random times before. What does this mean? How do I solve it?
Edit: I have noticed that the user gets logged out after this. Might it be a problem, that the session doesn’t get renewed? I do not manually change any session variables while the user is browsing. Would a viable solution be, for example, to change the value of some session variable upon visiting pages?
Source: Symfony Questions