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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): 23.0.2
Operating system and version (eg, Ubuntu 20.04): Centos 8.2
Apache or nginx version (eg, Apache 2.4.25): Apache
PHP version (eg, 7.4): 7.4.13
The issue you are facing:
Upgraded from 21.0.4 > 21.0.9 Sync to clients OK but web says “Internal Server Error has occurred”. Continued to upgrade to 22.2.5 and then 23.0.2 - same web error. Noted on comparison to working server, that “index.php” missing from web url ?
Is this the first time you’ve seen this error? (Y/):Y
Steps to replicate it:
- Upgraded using updater/updater.phar
The output of your Nextcloud log in Admin > Logging:
Cannot Access
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'passwordsalt' => '<REMOVED>',
'secret' => '<REMOVED>',
'trusted_domains' =>
array (
0 => 'pcloud.pirtek.com.au',
1 => 'pcloud2.pirtek.com.au',
),
'datadirectory' => '/pCLOUDdata',
'dbtype' => 'mysql',
'version' => '23.0.2.1',
'overwrite.cli.url' => 'http://pcloud.pirtek.com.au/nextcloud',
'htaccess.RewriteBase' => '/nextcloud',
'dbname' => 'nextcloud',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'oc_pCLOUDAdmin',
'dbpassword' => '<REMOVED>',
'installed' => true,
'instanceid' => 'oc1rl5m3dmfd',
'mail_from_address' => 'pCLOUDAdmin',
'mail_smtpmode' => 'smtp',
'mail_sendmailmode' => 'smtp',
'mail_domain' => 'pirtek.com.au',
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpauth' => 1,
'mail_smtphost' => 'notes.pirtek.com.au',
'mail_smtpport' => '25',
'mail_smtpname' => '<REMOVED>',
'mail_smtppassword' => '<REMOVED>',
'trashbin_retention_obligation' => '30, 35',
'logfile' => '/var/log/nextcloud/nextcloud.log',
'loglevel' => 0,
'logdateformat' => 'F d, Y H:i:s',
'memcache.local' => '\\OC\\Memcache\\APCu',
'redis' =>
array (
'host' => '/var/run/redis/redis.sock',
'port' => 6379,
),
'twofactor_enforced' => 'false',
'twofactor_enforced_groups' =>
array (
0 => 'Pirtek IT',
),
'twofactor_enforced_excluded_groups' =>
array (
0 => 'admin',
),
'maintenance' => false,
'theme' => '',
'default_phone_region' => 'AU',
);
The output of your Apache/nginx/system log in /var/log/____:
[Thu Mar 10 17:39:26.525196 2022] [core:error] [pid 1047930:tid 139731316762368] [client 192.168.3.1:59376] AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.
