#303 There was a problem with your session token

That message appears from time to time, and the logs show this:

Cannot change save handler when headers already sent in /var/www/gnusocial/lib/util/util.php on line 288PHP message: PHP Warning: session_start(): Cannot start session when headers already sent in /var/www/gnusocial/lib/util/util.php on line 310PHP message: PHP Notice: Undefined variable: _SESSION in /var/www/gnusocial/lib/util/util.php on line 311PHP message: PHP Warning: array_key_exists() expects parameter 2 to be array, null given in /var/www/gnusocial/lib/util/util.php on line 311

Chrome does not seem affected; it happens in Firefox. When it started, it could (almost) be mitigated by opening the GNUSocial session in a private container, but it is getting worse with every new Firefox version.

I'm using the RedisQueue plugin, but disabling it (and restarting queues) does not change the behaviour.

It seems it was related to a corrupted cookie storage setting. Closing!