NC28 - CalDAV Warning in logs

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1

Nextcloud version : 28.0.10
Operating system and version : Ubuntu 20.04
Apache or nginx version : 2.4.55
PHP version : 8.1

The issue you are facing:

Is this the first time you’ve seen this error? Yes

I updated my NC from Version 27 to 28 and now I’m seeing this warnings in my NC Web Log. This warning occur every 15 minutes.

The output of your Nextcloud log in Admin > Logging:

|Warnung|dav|ClientException Client error: `GET https://my.domain.de/remote.php/dav/public-calendars/F7yAFezDdEgqZp3t?export` resulted in a `404 Not Found` response: <?xml version="1.0" encoding="utf-8"?> <d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns"> <s:exception>Interner (truncated...)

Subscription 1 could not be refreshed due to a network error|

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

$CONFIG = array (
  'instanceid' => 'removed',
  'passwordsalt' => 'removed',
  'secret' => 'removed',
  'trusted_domains' => 
  array (
    0 => 'removed',
  ),
  'datadirectory' => 'removed',
  'overwrite.cli.url' => 'removed',
  'dbtype' => 'mysql',
  'version' => '28.0.10.1',
  'dbname' => 'removed',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'removed',
  'dbuser' => 'removed',
  'dbpassword' => 'removed',
  'default_phone_region' => 'DE',
  'installed' => true,
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'memcache.distributed' => '\\OC\\Memcache\\Redis',
  'redis' => 
  array (
    'host' => '/run/redis/redis-server.sock',
    'port' => 0,
    'dbindex' => 0,
    'password' => 'removed',
    'timeout' => 1.5,
  ),
  'session_lifetime' => 86400,
  'remember_login_cookie_lifetime' => 1296000,
  'mail_smtpmode' => 'smtp',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_from_address' => 'info',
  'mail_domain' => 'removed',
  'mail_smtpauth' => 1,
  'mail_smtpname' => 'removed',
  'mail_smtppassword' => 'removed',
  'mail_smtpport' => '465',
  'mail_smtpsecure' => 'ssl',
  'mail_smtphost' => 'removed',
  'loglevel' => 0,
  'logtimezone' => 'Europe/Berlin',
  'log_rotate_size' => 104857600,
  'default_language' => 'de',
  'maintenance' => false,
  'theme' => '',
  'updater.release.channel' => 'stable',
  'twofactor_enforced' => 'false',
  'twofactor_enforced_groups' => 
  array (
  ),
  'twofactor_enforced_excluded_groups' => 
  array (
  ),
  'mysql.utf8mb4' => true,
  'has_rebuilt_cache' => true,
  'app_install_overwrite' => 
  array (
    0 => 'cookbook',
  ),
  'skeletondirectory' => 'removed',
  'updater.secret' => 'removed',
);

Does anybody have a idea what’s going on and how I can fix this?
I know I can upgrade to NC29 but I want to know if I need to fix this first.

Thanks a lot.
Best regards

2

Is this a shared calendar?
Can you check the logfiles, if the share does not exist (perhaps it was deleted and someone still uses the link) or if something broke and generates an error in the logs.

3

Thanks tflidd,
it looks like the problem Is gone.
Maybe it was a problem with one of my calendars because I deleted some old calendars and at the moment the problem is not there anymore.

Best regards