Support intro
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, 12.0.2): 14.0.3
Operating system and version (eg, Ubuntu 17.04): Cent Os 7
Apache or nginx version (eg, Apache 2.4.25):
PHP version (eg, 7.1): 7.2
The issue you are facing:
I want to update my nextcloud with the web updater (stable channel).
After the click on “start update” I got this messages:
Current version is 14.0.3.
Update to Nextcloud 14.0.4 available. (channel: “stable”)
Following file will be downloaded automatically: https://download.nextcloud.com/server/releases/nextcloud-14.0.4.zip
-
Check for expected files
The following extra files have been found:
- ocm-provider
Is this the first time you’ve seen this error? (Y/N): Y
The output of your Nextcloud log in Admin > Logging:
There are no entries in this time range
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => '',
'passwordsalt' => '',
'secret' => '',
'trusted_domains' =>
array (
0 => '',
),
'datadirectory' => '',
'overwrite.cli.url' => '',
'dbtype' => 'mysql',
'version' => '14.0.3.0',
'dbname' => '',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => '',
'installed' => true,
'memcache.local' => '\\OC\\Memcache\\APCu',
'mail_smtpmode' => 'smtp',
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpsecure' => 'tls',
'mail_from_address' => '',
'mail_domain' => '',
'mail_smtpauth' => 1,
'mail_smtphost' => '',
'mail_smtpport' => '587',
'mail_smtpname' => '',
'mail_smtppassword' => '',
'maintenance' => false,
'theme' => '',
'loglevel' => 2,
'updater.secret' => '
);