Support intro
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): 17.?
Operating system and version (eg, Ubuntu 20.04): Ubuntu 18.04.6 LTS
Apache or nginx version (eg, Apache 2.4.25): Apache/2.4.29 (Ubuntu)
PHP version (eg, 7.4): PHP 8.1.2 (cli) (built: Jan 24 2022
The issue you are facing:
Continuous issues trying to update this server.
Actual Nextcloud operation has been relatively trouble free otherwise.
Can I backup the database and just move it to a newly built Ubuntu 22.04 with Nextcloud 24.03?
Current error:
Doctrine\DBAL\Exception\DriverException: An exception occurred while executing ‘ALTER TABLE oc_addressbooks CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;’: SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes
Previous error:
# Cannot declare class OCA\Talk\Migration\Version2000Date20170707093535
I keep
Is this the first time you’ve seen this error? (Y/N): I get a new error everytime I resolve one error and rerun the upgrade.
Steps to replicate it:
- Launch update
The output of your Nextcloud log in Admin > Logging:
server currently in maintenance
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => 'ffggffbg tv gdd',
'passwordsalt' => ‘dgbdaxxfgfxsst5)',
'secret' => 'zzdhdvvhhnngf',
'trusted_domains' =>
array (
0 => '
1 => 'localhost',
2 => '127.0.0.1',
3 =>
4 => '
5 => '
6 => 'files',
7 => '',
8 => '
),
'datadirectory' => '/var/www/nextcloud/data',
'overwrite.cli.url' => 'https://192.168.1.1/nextcloud',
'dbtype' => 'mysql',
'version' => '17.0.10.1',
'dbname' => 'nextcloud',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'dbuser' =>
'dbpassword' =>
'installed' => true,
'mail_smtpmode' => 'smtp',
'mail_smtpauthtype' => 'LOGIN',
'mail_from_address' => 'cloud',
'mail_domain' =>
'mail_smtpauth' => 1,
'maintenance' => false,
'updater.release.channel' => 'stable',
'theme' => '',
'loglevel' => 0,
'mail_smtphost' => 'mail.office365.com',
'mail_sendmailmode' => 'smtp',
The output of your Apache/nginx/system log in /var/log/____:
no system log. just access.log and error.log
output from error.log:
/var/log/apache2$ more error.log
[Wed Aug 24 06:25:04.414329 2022] [ssl:warn] [pid 41522] AH01909: 127.0.1.1:443:0 serve
r certificate does NOT include an ID which matches the server name
[Wed Aug 24 06:25:04.414765 2022] [mpm_prefork:notice] [pid 41522] AH00163: Apache/2.4.
29 (Ubuntu) OpenSSL/1.1.1g configured -- resuming normal operations
[Wed Aug 24 06:25:04.414780 2022] [core:notice] [pid 41522] AH00094: Command line: '/us
r/sbin/apache2'
PASTE HERE
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.
Nothing .log in /var/nextcloud
