Hello everyone!
I don't know why (as I didn't change anything on my server) my Moodle installation stopped working because of redirection loop (/login/index.php). I tried to upgrade Moodle and it didn't help (though I'm using Moodle 3.3 now). But the site shows information about maintenance mode turned on when I enable it.
PHP version on the server: 5.6. Server logs don't show anything: it informs only "303 See Other" happened - no errors. Using another browser doesn't help.
Any ideas how to repair it? It's a little bit urgent, though, because the site is live-dead...