Internal Server Error during Log Out

Mipher

When I try to log out the user I receive a 500 Internal Server Error.

That's the error in the error.log:

2017/06/25 17:09:28 [error] 25421#0: *2861 FastCGI sent in stderr: "PHP message: PHP Warning: SessionHandler::read(): open(/var/lib/php/session/sess_blqbtqql74ss0141jjjiirbnq2, O_RDWR) failed: Permission denied (13) in /var/www/domain_name/web/flarum/vendor/symfony/http-foundation/Session/Storage/Proxy/SessionHandlerProxy.php on line 69
PHP message: PHP Warning: SessionHandler::write(): open(/var/lib/php/session/sess_blqbtqql74ss0141jjjiirbnq2, O_RDWR) failed: Permission denied (13) in /var/www/domain_name/web/flarum/vendor/symfony/http-foundation/Session/Storage/Proxy/SessionHandlerProxy.php on line 77
PHP message: PHP Warning: session_write_close(): Failed to write session data (user). Please verify that the current setting of session.save_path is correct (/var/lib/php/session) in Unknown on line 0" while reading response header from upstream, client: 188.114.102.48, server: domain_name.host.it, request: "GET /flarum/logout?token=7jnh2foNVXgKl1mJHq9k3rjKPcHBWLvpApvVGeqK HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm-domain_name.sock:", host: "domain_name.host.it", referrer: "https://domain_name.host.it/flarum/"

Thanks for any help.

Mipher

Any response for this problem?

Chope

Seems like permission error to me, do you use the right chmod during installation?

iec989

The solution is most likely:
sudo chown www-data:www-data /var/lib/php/sessions/