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Sorry to hear you’re facing problems 
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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): 22.2.5.1
Operating system and version (eg, Ubuntu 20.04): Raspberry Pi OS Bullseye
Apache or nginx version (eg, Apache 2.4.25): Apache/2.4.52 (Debian)
PHP version (eg, 7.4): 7.4.28
The issue you are facing:
After few days of smooth NC running, the menu item “Settings/System” starts to not loading. Page “https://..*/settings/admin/serverinfo” does not open, browsers loading symbol running infinitely, no event logged, no error thrown. Maybe this is a apache issue, but i don’t know where to look for. All other items of “Settings” are loading as expected.
What i have done so far:
- “sudo chown -R www-data:www-data /var/www/nextcloud/” → does not resolve
- “systemctl restart apache2” → does not resolve
- reboot the server → all running as expected
I would rather prefer to find and eliminate the cause of the issue than to restart the server by default once a day, or would this be a good idea?
Any hint about where and what to examine would be greatly appreciated.
Is this the first time you’ve seen this error? (Y/N): N
Steps to replicate it:
- Log in as administrator
- Open menu “Settings”
- Open menu “System”
The output of your Nextcloud log in Admin > Logging:
Nothing relating to this
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'overwriteprotocol' => 'https',
'instanceid' => '*',
'passwordsalt' => '*',
'secret' => '*',
'trusted_domains' =>
array (
0 => 'localhost',
1 => '*.*',
2 => '*.*.*',
),
'datadirectory' => '/var/www/*/data',
'filesystem_check_changes' => 0,
'dbtype' => '*',
'version' => '22.2.5.1',
'overwrite.cli.url' => 'https://*.*',
'htaccess.RewriteBase' => '/',
'dbname' => '*',
'dbhost' => 'localhost',
'dbport' => '*',
'dbtableprefix' => 'oc_',
'dbuser' => '*',
'dbpassword' => '*',
'installed' => true,
'memcache.local' => '\\OC\\Memcache\\Redis',
'memcache.locking' => '\\OC\\Memcache\\Redis',
'filelocking.enabled' => 'true',
'mail_smtpmode' => 'smtp',
'mail_smtpsecure' => 'ssl',
'mail_sendmailmode' => 'smtp',
'mail_smtphost' => '*',
'mail_smtpport' => '*',
'mail_smtpauth' => 1,
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpname' => '*',
'mail_smtppassword' => '*',
'mail_from_address' => '*.*',
'mail_domain' => 'gmx.net',
'default_language' => 'de_DE',
'default_phone_region' => 'DE',
'knowledgebaseenabled' => false,
'maintenance' => false,
'theme' => '',
'loglevel' => 2,
'updater.release.channel' => 'stable',
'activity_expire_days' => 14,
'auth.bruteforce.protection.enabled' => true,
'blacklisted_files' =>
array (
0 => '.htaccess',
1 => 'Thumbs.db',
2 => 'thumbs.db',
),
'cron_log' => true,
'enable_previews' => true,
'enabledPreviewProviders' =>
array (
0 => 'OC\\Preview\\PNG',
1 => 'OC\\Preview\\JPEG',
2 => 'OC\\Preview\\GIF',
3 => 'OC\\Preview\\BMP',
4 => 'OC\\Preview\\XBitmap',
5 => 'OC\\Preview\\Movie',
6 => 'OC\\Preview\\PDF',
7 => 'OC\\Preview\\MP3',
8 => 'OC\\Preview\\TXT',
9 => 'OC\\Preview\\MarkDown',
),
'integrity.check.disabled' => false,
'logfile' => '/var/log/*/*.log',
'logtimezone' => 'Europe/Berlin',
'log_rotate_size' => 104857600,
'preview_max_x' => 1024,
'preview_max_y' => 768,
'preview_max_scale_factor' => 1,
'redis' =>
array (
'host' => '/run/redis/redis-server.sock',
'port' => 0,
'timeout' => 0.0,
),
'quota_include_external_storage' => false,
'share_folder' => '/Freigaben',
'skeletondirectory' => '',
'trashbin_retention_obligation' => 'auto, 7',
'DATABASE_URL' => '***',
'DATABASE_PREFIX' => 'oc_',
'REDIS_URL' => 'redis://localhost',
'*_URL' => 'https://*.*.*',
);
The output of your Apache/nginx/system log in /var/log/apache2/error.log:
[Wed Mar 02 00:00:01.515049 2022] [http2:warn] [pid 41126] AH10034: The mpm module (prefork.c) is not supported by mod_http2. The mpm determines how things are processed in your server. HTTP/2 has more demands in this regard and the curr>
[Wed Mar 02 00:00:01.613411 2022] [mpm_prefork:notice] [pid 41126] AH00163: Apache/2.4.52 (Debian) OpenSSL/1.1.1k configured -- resuming normal operations
[Wed Mar 02 00:00:01.613490 2022] [core:notice] [pid 41126] AH00094: Command line: '/usr/sbin/apache2'
cat: /sys/class/net/wlan0/speed: Invalid argument
cat: /sys/class/net/wlan0/duplex: Invalid argument
[Wed Mar 02 01:10:08.423555 2022] [mpm_prefork:notice] [pid 41126] AH00170: caught SIGWINCH, shutting down gracefully
[Wed Mar 02 01:38:04.304600 2022] [http2:warn] [pid 45843] AH10034: The mpm module (prefork.c) is not supported by mod_http2. The mpm determines how things are processed in your server. HTTP/2 has more demands in this regard and the curr>
[Wed Mar 02 01:38:04.587737 2022] [mpm_prefork:notice] [pid 45843] AH00163: Apache/2.4.52 (Debian) OpenSSL/1.1.1k configured -- resuming normal operations
[Wed Mar 02 01:38:04.587869 2022] [core:notice] [pid 45843] AH00094: Command line: '/usr/sbin/apache2'
[Wed Mar 02 05:18:05.467311 2022] [core:error] [pid 50038] [client 45.146.165.37:54632] AH10244: invalid URI path (/cgi-bin/.%2e/.%2e/.%2e/.%2e/bin/sh)
[Wed Mar 02 11:13:09.970769 2022] [mpm_prefork:notice] [pid 45843] AH00170: caught SIGWINCH, shutting down gracefully
[Wed Mar 02 11:13:10.285641 2022] [http2:warn] [pid 57256] AH10034: The mpm module (prefork.c) is not supported by mod_http2. The mpm determines how things are processed in your server. HTTP/2 has more demands in this regard and the curr>
[Wed Mar 02 11:13:10.371482 2022] [mpm_prefork:notice] [pid 57256] AH00163: Apache/2.4.52 (Debian) OpenSSL/1.1.1k configured -- resuming normal operations
[Wed Mar 02 11:13:10.371602 2022] [core:notice] [pid 57256] AH00094: Command line: '/usr/sbin/apache2'
