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Or for longer, use three backticks above and below the code snippet:
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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): 25.0.2
Operating system and version (eg, Ubuntu 20.04): ? (web hoster)
Apache or nginx version (eg, Apache 2.4.25): ? (web hoster)
PHP version (eg, 7.4): 8.1
The issue you are facing:
I started an update from NCv25.0.2 to NCv25.0.3 vi the web updater.
My NC instance is stuck in Maintenance mode.
Unfortunately I only have FTP access to NC, wehre I tried already the following:
- .user.ini
memory_limit=256M
max_execution_time=300 - config.php
‘maintenance’ => false,
But no success. I am stuck in maintenance mode.
Is this the first time you’ve seen this error? Y:
In the past I this happened to me as well, but resetting the maintenance flag in config.php (several times) helped me out of this situation.
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => 'xxxxxxxxxxxxxxxxx',
'passwordsalt' => 'xxxxxxxxxxxxxxxxxxxxxxxx',
'secret' => 'rxxxxxxxxxxxxxxxxxxxxx',
'trusted_domains' =>
array (
0 => 'xxxxxxx.net',
1 => 'www.xxxxxxx.net',
),
'datadirectory' => '/www/htdocs/xxxxxxxxx.net/data',
'dbtype' => 'mysql',
'version' => '25.0.2.3',
'overwrite.cli.url' => 'http://xxxxx.net',
'dbname' => 'dxxxxxxxxx',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'xxxxxxxx',
'mysql.utf8mb4' => true,
'dbuser' => 'xxxxxxxxx',
'dbpassword' => 'xxxxxxxxxxxxx',
'installed' => true,
'tempdirectory' => '/www/htdocs/xxxxxxxxxxxxx/data/tmp/',
'mail_smtpmode' => 'sendmail',
'mail_sendmailmode' => 'pipe',
'mail_from_address' => 'xxxxxxx',
'mail_domain' => 'xxxxxxx',
'default_phone_region' => 'DE',
'maintenance' => false,
'theme' => '',
'loglevel' => 0,
'app_install_overwrite' =>
array (
0 => 'calendar',
),
'updater.secret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxx,
);
Update to 25.0.3
An error occurred.
Detailed logs
Preparing update
Set log level to debug
Turned on maintenance mode
Repair step: Repair MySQL collation
Repair info: All tables already have the correct collation → nothing to do
Repair step: Repair SQLite autoincrement
Repair step: Copy data from accounts table when migrating from ownCloud
Repair step: Drop account terms table when migrating from ownCloud
Updating database schema
Updated database
An error occurred.