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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): 22.2.4
Operating system and version (eg, Ubuntu 20.04): Ubuntu 20.04.3 LTS
Apache or nginx version (eg, Apache 2.4.25): Apache/2.4.41
PHP version (eg, 7.4): 8.0.15
The issue you are facing:
Is this the first time you’ve seen this error? (Y/N): Yes
Steps I remind I have done:
- Start Web based Updater and let it do all steps include “Move new files in place”
- Do not continue the update. Instead just disable maintenance mode
- Restart server
- Try now to start the Update from the beginning as usual
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => 'xxx',
'passwordsalt' => 'xxx',
'secret' => 'xxxxxx',
'trusted_domains' =>
array (
0 => 'localhost',
1 => 'LOCAL_IP',
2 => 'PUBLIC_IP',
3 => 'www.PUBLIC_IP',
),
'trusted_proxies' =>
array (
0 => 'PROXY_IP',
),
'datadirectory' => '/mnt/nextcloud/',
'dbtype' => 'mysql',
'version' => '22.2.4.3',
'overwrite.cli.url' => 'http://localhost',
'dbname' => 'nextcloud',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'xxx',
'dbpassword' => 'xxx',
'installed' => true,
'default_phone_region' => 'DE',
'memcache.local' => '\\OC\\Memcache\\APCu',
'mail_from_address' => 'cloud',
'mail_smtpmode' => 'smtp',
'mail_sendmailmode' => 'smtp',
'mail_domain' => 'MAIL_DOMAIN',
'mail_smtpauth' => 1,
'mail_smtphost' => 'SMTP_SERVER',
'mail_smtpport' => '465',
'mail_smtpname' => 'SMTP_USER',
'mail_smtppassword' => 'SMTP_PWD',
'mail_smtpsecure' => 'ssl',
'maintenance' => false,
'loglevel' => 3,
'twofactor_enforced' => 'true',
'twofactor_enforced_groups' =>
array (
0 => 'User',
1 => 'admin',
),
'twofactor_enforced_excluded_groups' =>
array (
),
'updater.release.channel' => 'stable',
'updater.secret' => 'xxx',
);
Here is what I get, when trying to update:
user@nextcloud:/var/www/nextcloud$ sudo -u www-data php /var/www/nextcloud/updater/updater.phar
Nextcloud Updater - version: v20.0.0beta4-11-g68fa0d4
Current version is 22.2.4.
Update to Nextcloud 22.2.5 available. (channel: "stable")
Following file will be downloaded automatically: https://download.nextcloud.com/server/releases/nextcloud-22.2.5.zip
Open changelog ↗
Steps that will be executed:
[✔] Check for expected files
[✔] Check for write permissions
[✔] Create backup
[✔] Downloading
[✔] Verify integrity
[✔] Extracting
[✔] Enable maintenance mode
[✔] Replace entry points
[✔] Delete old files
[✔] Move new files in place
[✔] Done
Continue update? [y/N] y
Info: Pressing Ctrl-C will finish the currently running step and then stops the updater.
[✔] Check for expected files
[✔] Check for write permissions
[✔] Create backup
[✔] Downloading
[✔] Verify integrity
[✔] Extracting
[✔] Enable maintenance mode
[✔] Replace entry points
[✔] Delete old files
[✔] Move new files in place
[✔] Done
Update of code successful.
Should the "occ upgrade" command be executed? [Y/n] y
Nextcloud is already latest version
Keep maintenance mode active? [y/N] n
Maintenance mode already disabled
Maintenance mode is disabled
As soon as I start the command, all hooks are set instantly.
If I start the maintenance mode before execute the code I get:
user@nextcloud:/var/www/nextcloud$ sudo -u www-data php /var/www/nextcloud/updater/updater.phar
Nextcloud Updater - version: v20.0.0beta4-11-g68fa0d4
Current version is 22.2.4.
Update to Nextcloud 22.2.5 available. (channel: "stable")
Following file will be downloaded automatically: https://download.nextcloud.com/server/releases/nextcloud-22.2.5.zip
Open changelog ↗
Steps that will be executed:
[✔] Check for expected files
[✔] Check for write permissions
[✔] Create backup
[✔] Downloading
[✔] Verify integrity
[✔] Extracting
[✔] Enable maintenance mode
[✔] Replace entry points
[✔] Delete old files
[✔] Move new files in place
[✔] Done
Continue update? [y/N] y
Info: Pressing Ctrl-C will finish the currently running step and then stops the updater.
[✔] Check for expected files
[✔] Check for write permissions
[✔] Create backup
[✔] Downloading
[✔] Verify integrity
[✔] Extracting
[✔] Enable maintenance mode
[✔] Replace entry points
[✔] Delete old files
[✔] Move new files in place
[✔] Done
Update of code successful.
Should the "occ upgrade" command be executed? [Y/n] y
Nextcloud is in maintenance mode - no apps have been loaded
Nextcloud is in maintenance mode
Maybe an upgrade is already in process. Please check the logfile (data/nextcloud.log). If you want to re-run the upgrade procedure, remove the "maintenance mode" from config.php and call this script again.
Keep maintenance mode active? [y/N] n
Maintenance mode disabled
Maintenance mode is disabled
Remove the line “maintenance mode” from config doesn’t help
