Support intro
Sorry to hear you’re facing problems 
help.nextcloud.com is for home/non-enterprise users. If you’re running a business, paid support can be accessed via portal.nextcloud.com where we can ensure your business keeps running smoothly.
In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 20.0.5): 24.0.0
Operating system and version (eg, Ubuntu 20.04): Ubuntu 20.04
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4.41-4ubuntu3.10
PHP version (eg, 7.4): 7.4
The issue you are facing:
After I upgrade to NC 24.0.0 the log viewer (https://servername/settings/admin/logging) starts loading but then the content is removed and the page becomes blank.
In the developer console I see the following errors:
react-dom.production.min.js:216 Error: Minified React error #188; visit https://reactjs.org/docs/error-decoder.html?invariant=188 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at t.findDOMNode (react-dom.production.min.js:289:284)
at t.transition (CSSTransitionGroupChild.js:129:30)
at t.r.componentWillEnter (CSSTransitionGroupChild.js:97:15)
at t.s.performEnter (TransitionGroup.js:83:19)
at TransitionGroup.js:192:21
at Array.forEach (<anonymous>)
at t.componentDidUpdate (TransitionGroup.js:191:17)
at co (react-dom.production.min.js:219:502)
at xl (react-dom.production.min.js:259:160)
at t.unstable_runWithPriority (scheduler.production.min.js:18:343)
Uncaught (in promise) Error: Minified React error #188; visit https://reactjs.org/docs/error-decoder.html?invariant=188 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.
at t.findDOMNode (react-dom.production.min.js:289:284)
at t.transition (CSSTransitionGroupChild.js:129:30)
at t.r.componentWillEnter (CSSTransitionGroupChild.js:97:15)
at t.s.performEnter (TransitionGroup.js:83:19)
at TransitionGroup.js:192:21
at Array.forEach (<anonymous>)
at t.componentDidUpdate (TransitionGroup.js:191:17)
at co (react-dom.production.min.js:219:502)
at xl (react-dom.production.min.js:259:160)
at t.unstable_runWithPriority (scheduler.production.min.js:18:343)
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
- Log in to Nextcloud as administrative user
- Go to Admin > Logging
The output of your Nextcloud log in Admin > Logging:
Not possible, since logging is not available.
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => '-- removed for to security reasons --',
'passwordsalt' => '-- removed for to security reasons --',
'secret' => '-- removed for to security reasons --',
'trusted_domains' =>
array (
0 => '-- removed for to security reasons --',
),
'datadirectory' => '-- removed for to security reasons --',
'skeletondirectory' => '',
'overwrite.cli.url' => '-- removed for to security reasons --',
'dbtype' => 'mysql',
'version' => '24.0.0.12',
'installed' => true,
'htaccess.RewriteBase' => '/',
'maintenance' => false,
'dbname' => '-- removed for to security reasons --',
'dbhost' => '-- removed for to security reasons --',
'dbuser' => '-- removed for to security reasons --',
'dbpassword' => '-- removed for to security reasons --',
'memcache.local' => '\\OC\\Memcache\\APCu',
'knowledgebaseenabled' => false,
'theme' => '',
'simpleSignUpLink.shown' => false,
'loglevel' => 0,
'log_authfailip' => true,
'mysql.utf8mb4' => true,
'mail_from_address' => 'nextcloud',
'mail_smtpmode' => 'sendmail',
'mail_smtpauthtype' => 'LOGIN',
'mail_domain' => '-- removed for to security reasons --',
'updater.release.channel' => 'stable',
'trashbin_retention_obligation' => 'auto, 30',
'app_install_overwrite' =>
array (
0 => 'apporder',
1 => 'deck',
2 => 'keeweb',
3 => 'appointments',
4 => 'drawio',
5 => 'bookmarks',
6 => 'spreed',
),
'has_rebuilt_cache' => true,
'onlyoffice' =>
array (
'verify_peer_off' => true,
),
'default_language' => 'de',
'default_phone_region' => 'DE',
'check_data_directory_permissions' => false,
);
The output of your Apache/nginx/system log in /var/log/____:
(omitted as this this file is about 70 MB big and contains private information)
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
(not possible since log is not available in UI)