Nextcloud version (eg, 20.0.5):
Operating system and version (eg, Ubuntu 20.04):
Apache or nginx version (eg, Apache 2.4.25):
PHP version (eg, 7.4):
I have a reproducible and very annoying problem with my Nextcloud installation. Whenever I use the “Nextcloud Text” markdown editor, I get an error after about 30-180s of use. It always works fine in the beginning, but after given amount of time I get a “File could not be loaded. Please check your internet connection. (Retry)” error in the UI and I can’t continue editing the file until I refresh the browser (after which everything works fine again for a couple of seconds/minutes).
I inspected my console/network traffic in the Dev Tools while this happens:
There’s regular requests to /sync and /push endpoints, which alle work fine and return 200. But suddently, out of nowhere, the requests to these endpoints fail with a “HTTP 412 Precondition failed”. In the body of the 412 responsse I see a “CSRF check failed”.
The output of your config.php file in
/path/to/nextcloud (make sure you remove any identifiable information!):
<?php $CONFIG = array ( 'instanceid' => '***', 'passwordsalt' => '***'', 'secret' => '***'', 'trusted_domains' => array ( 0 => '***'', 1 => 'cloud.mydomain.de', ), 'datadirectory' => '/home/username/nextcloud_data', 'dbtype' => 'mysql', 'version' => '184.108.40.206', 'overwrite.cli.url' => 'https://cloud.mydomain.de', 'dbname' => 'username', 'dbhost' => 'localhost', 'dbport' => '', 'dbtableprefix' => 'oc_', 'mysql.utf8mb4' => true, 'dbuser' => 'username', 'dbpassword' => '***', 'installed' => true, [... mail stuff here] 'maintenance' => false, 'loglevel' => 2, 'default_language' => 'de', 'memcache.local' => '\\OC\\Memcache\\APCu', 'updater.release.channel' => 'stable', 'redis' => array ( 'host' => '/home/username/.redis/sock', 'port' => '0', 'timeout' => '1.5', ), 'filelocking.enabled' => 'true', 'memcache.locking' => '\\OC\\Memcache\\Redis', 'memcache.distributed' => '\\OC\\Memcache\\Redis', 'htaccess.RewriteBase' => '/', );
Nothing in the server/error logs at the time of this happening.
I know this forum is not for the Nextcloud App, but the given error is thrown in Nextcloud core, not in the app, so I thought this might still be the right place.
Found some other threads with people having a HTTP412 error during logout, but it seems to be unrelated. My logout works fine. However I feel like I sometimes also get this error during browsing files, but I am not able to recreate it as easily as the error int Nextcloud Text.
Any ideas why the CSRF error is thrown right out of nowhere?