Nextcloud version “latest” Docker
Operating system and version via Docker running on Synology DSM 6.the latest
Apache or nginx version Apache 2,4
PHP version 7.2
The issue you are facing:
After entering (correct) username and password I eventually receive a “405” error. Calendar and contact apps running on desktop cannot connect to Nextcloud calendar or contact apps running on server - timeout error.
iOS Nextcloud on iPad can access files.
So NC is running, I can access via WebDAV but not HTTP/S.
Is this the first time you’ve seen this error? Yes!
Steps to replicate it:
- go to https://nextcloud.mydomain.tld
 - Enter username and password
 - receive 405 error message
 
The output of your Nextcloud log in Admin > Logging:
Unable to access (see above)
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
  'htaccess.RewriteBase' => '/',
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'apps_paths' => 
  array (
    0 => 
    array (
      'path' => '/var/www/html/apps',
      'url' => '/apps',
      'writable' => false,
    ),
    1 => 
    array (
      'path' => '/var/www/html/custom_apps',
      'url' => '/custom_apps',
      'writable' => true,
    ),
  ),
  'instanceid' => 'xxxxx',
  'passwordsalt' => 'xxxxx',
  'secret' => 'xxxxx',
  'trusted_domains' => 
  array (
    0 => '192.168.1.2:8080',
    1 => 'nextcloud.mydomain.tld',
  ),
  'datadirectory' => '/var/www/html/data',
  'dbtype' => 'mysql',
  'version' => '22.1.1.2',
  'overwrite.cli.url' => 'http://192.168.1.2:8080',
  'dbname' => 'mydatabase',
  'dbhost' => '192.168.1.2:3306',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => 'myuser',
  'dbpassword' => 'xxxxx',
  'installed' => true,
  'overwriteprotocol' => 'https',
  'maintenance' => false,
  'mail_smtpmode' => 'smtp',
  'mail_smtpsecure' => 'ssl',
  'mail_sendmailmode' => 'smtp',
  'mail_from_address' => 'nextcloud',
  'mail_domain' => 'nextcloud.mydomain.tld',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_smtpauth' => 1,
  'mail_smtphost' => 'nextcloud.mydomain.tld',
  'mail_smtpport' => '465',
  'mail_smtpname' => 'nextcloud',
  'mail_smtppassword' => 'xxxxx',
  'theme' => '',
  'loglevel' => 2,
  'app_install_overwrite' => 
  array (
    0 => 'groupfolders',
  ),
);
The output of your Apache/nginx/system log in /var/log/____:
I'll have to look for that, if its needed...