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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): 17.0.2
Operating system and version (eg, Ubuntu 17.04): ubuntu-server 18.04.3
Apache or nginx version (eg, Apache 2.4.25): NGinx 1.17.4
PHP version (eg, 7.1): 7.3
The issue you are facing: Deleted files (2556 pics, docx, xlsx, …)
Trashbin shows all deleted files -> marking them and delete them finaly doesn’t work
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
- delete files
- try to delete them finaly by WebUI
- if that doesn’t work try deleting them by occ command trashbin:cleanup / --all-users
The output of your Nextcloud log in Admin > Logging: sadly no log entry in Nextcloud that corresponds to the action “files” or “delete” or. something else
In terminal no error
only: Remove deleted files of
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
> <?php
> $CONFIG = array (
> 'instanceid' => 'my id',
> 'passwordsalt' => 'my pass',
> 'secret' => 'my secret',
> 'trusted_domains' =>
> array (
> 0 => 'my.domain.de',
> 1 => 'my.local.IP',
> ),
> 'activity_expire_days' => 14,
> 'auth.bruteforce.protection.enabled' => 'false',
> 'blacklisted_files' =>
> array (
> 0 => '.htaccess',
> 1 => 'Thumbs.db',
> 2 => 'thumbs.db',
> ),
> 'trusted_proxies' =>
> array (
> 0 => 'my.Proxy.IP',
> ),
> 'overwritehost' => 'my.domain.de',
> 'overwriteconaddr' => '^IPpart1\\.IPpart2\\.IPpart3\\.IPpart4$',
> 'forward_for_headers' =>
> array (
> 0 => 'X_FORWARDED_FOR',
> 1 => 'HTTP_X_FORWARDED_FOR',
> ),
> 'datadirectory' => '/media/cloud/data',
> 'overwriteprotocol' => 'https',
> 'overwrite.cli.url' => '/',
> 'dbtype' => 'pgsql',
> 'version' => '17.0.2.1',
> 'dbname' => 'cloud',
> 'dbhost' => '127.0.0.1',
> 'dbport' => '',
> 'dbtableprefix' => 'oc_',
> 'dbuser' => 'db-user',
> 'dbpassword' => 'db-password',
> 'htaccess.RewriteBase' => '/',
> 'logtimezone' => 'Europe/Berlin',
> 'logfile' => '/media/cloud/data/nextcloud.log',
> 'log_rotate_size' => 10485760,
> 'cron_log' => true,
> 'installed' => true,
> 'filesystem_check_changes' => 0,
> 'quota_include_external_storage' => false,
> 'skeletondirectory' => '',
> 'share_folder' => '/Shares',
> 'knowledgebaseenabled' => false,
> 'ldapIgnoreNamingRules' => false,
> 'ldapProviderFactory' => '\\OCA\\User_LDAP\\LDAPProviderFactory',
> 'ldapUserCleanupInterval' => 20,
> 'memcache.local' => '\\OC\\Memcache\\Redis',
> 'filelocking.enabled' => 'true',
> 'memcache.locking' => '\\OC\\Memcache\\Redis',
> 'redis' =>
> array (
> 'host' => '/var/run/redis/redis.sock',
> 'port' => 0,
> 'timeout' => 0.0,
> 'password' => 'my.REDIS.Password',
> ),
> 'mail_smtpmode' => 'smtp',
> 'mail_smtpsecure' => 'ssl',
> 'mail_from_address' => 'info',
> 'mail_domain' => 'mail.domain.de',
> 'mail_smtphost' => 'mail.domain.de',
> 'mail_smtpport' => '465',
> 'maintenance' => false,
> 'integrity.check.disabled' => false,
> 'updater.release.channel' => 'stable',
> 'enable_previews' => true,
> 'enabledPreviewProviders' =>
> array (
> 0 => 'OC\\Preview\\PNG',
> 1 => 'OC\\Preview\\JPEG',
> 2 => 'OC\\Preview\\GIF',
> 3 => 'OC\\Preview\\BMP',
> 4 => 'OC\\Preview\\XBitmap',
> 5 => 'OC\\Preview\\Movie',
> 6 => 'OC\\Preview\\PDF',
> 7 => 'OC\\Preview\\MP3',
> 8 => 'OC\\Preview\\TXT',
> 9 => 'OC\\Preview\\MarkDown',
> ),
> 'preview_max_x' => 1024,
> 'preview_max_y' => 768,
> 'preview_max_scale_factor' => 1,
> 'trashbin_retention_obligation' => 'auto, 7',
> 'loglevel' => 2,
> 'mail_sendmailmode' => 'smtp',
> 'updater.secret' => 'my.updater.secret',
> );
used this help page:
https://docs.nextcloud.com/server/stable/admin_manual/configuration_server/occ_command.html?highlight=birthday#trashbin-label
