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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, 18.0.2): 19.02
Operating system and version (eg, Ubuntu 20.04): Ubuntu 20.04 Server
Apache or nginx version (eg, Apache 2.4.25): Apache
PHP version (eg, 7.1): 7.4
The issue you are facing:
I had a previous Nexcloud install that was working well until I had a disk issue on the remote VM.
Instead of spending days trying to resolve it I decided to cut my losses and do a clean install using the scripts linked below. While most of the install seem to be working, whenever I try to open any office document that should work with Collabora, I receive the error ‘mydomain.co.uk refused to connect’.
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
- Install Nextcloud and Collabora using the scripts from https://github.com/nextcloud/vm
- Try to open an office document
- Grumble when it consistently fails
The output of your Nextcloud log in Admin > Logging:
Fresh install and the only two entries appear unrelated to the issue:
"Error PHP Module 'smbclient' already loaded at Unknown#0 2020-09-02T20:40:52+0100"
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'passwordsalt' => 'vogon',
'secret' => 'pangalacticgargleblaster',
'trusted_domains' =>
array (
0 => 'localhost',
1 => '123.456.789.0',
2 => 'nextcloud.mydomain.co.uk',
3 => 'office.mydomain.co.uk',
),
'datadirectory' => '/mnt/ncdata',
'dbtype' => 'pgsql',
'version' => '19.0.2.2',
'overwrite.cli.url' => 'https://nextcloud.mydomain.co.uk/',
'dbname' => 'nextcloud_db',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'dbuser' => 'trillian',
'dbpassword' => 'arthur',
'installed' => true,
'instanceid' => 'slartibartfast',
'upgrade.disable-web' => 'true',
'log_type' => 'file',
'logfile' => '/var/log/nextcloud/nextcloud.log',
'loglevel' => '2',
'log.condition' =>
array (
'apps' =>
array (
0 => 'admin_audit',
),
),
'mail_smtpmode' => 'smtp',
'remember_login_cookie_lifetime' => '1800',
'log_rotate_size' => '0',
'trashbin_retention_obligation' => 'auto, 180',
'versions_retention_obligation' => 'auto, 365',
'simpleSignUpLink.shown' => false,
'memcache.local' => '\\OC\\Memcache\\APCu',
'filelocking.enabled' => true,
'memcache.distributed' => '\\OC\\Memcache\\Redis',
'memcache.locking' => '\\OC\\Memcache\\Redis',
'redis' =>
array (
'host' => '/var/run/redis/redis-server.sock',
'port' => 0,
'timeout' => 0.5,
'dbindex' => 0,
'password' => '42',
),
'logtimezone' => 'Etc/UTC',
'htaccess.RewriteBase' => '/',
'share_folder' => '/Shared',
'enable_previews' => true,
'enabledPreviewProviders' =>
array (
11 => 'OC\\Preview\\PNG',
12 => 'OC\\Preview\\JPEG',
13 => 'OC\\Preview\\GIF',
14 => 'OC\\Preview\\BMP',
15 => 'OC\\Preview\\MarkDown',
16 => 'OC\\Preview\\MP3',
17 => 'OC\\Preview\\TXT',
18 => 'OC\\Preview\\Movie',
),
'preview_max_x' => '2048',
'preview_max_y' => '2048',
'jpeg_quality' => '60',
'maintenance' => false,
'mail_smtpsecure' => 'tls',
'mail_sendmailmode' => 'smtp',
'mail_from_address' => 'fordprefect',
'mail_domain' => 'mydomain.co.uk',
'mail_smtpauth' => 1,
'mail_smtphost' => 'marvin.mydomain.co.uk',
'mail_smtpport' => '587',
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpname' => 'fordprefect@mydomain.co.uk',
'mail_smtppassword' => 'zaphod',
The output of your Apache/nginx/system log in /var/log/____:
https://pastebin.com/R1i6xp3T
