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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, 20.0.5): 21.0.5
Operating system and version (eg, Ubuntu 20.04): CentOS 7
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4.6
PHP version (eg, 7.4): 7.4
The issue you are facing:
When trying to rename/move a folder, the following error occurs:
Fatal webdav Sabre\DAV\Exception: Failed to rename /Documents/Images to /Documents/Images2
2021-10-03T16:05:47+0000
Error PHP Error: rename(/nextcloud/data/files/Documents/Images,/nextcloud/data/files/Documents/Images2): Permission denied at /var/www/html/nextcloud/lib/private/Files/Storage/Local.php#347
2021-10-03T16:05:47+0000
When trying to remove the folder the following error occurs:
Error PHP Error: rmdir(/nextcloud/data/files/Documents/Images): Permission denied at /var/www/html/nextcloud/lib/private/Files/Storage/Local.php#128
2021-10-03T16:07:41+0000
Error PHP Error: unlink(/nextcloud/data/files/Documents/Images/CentOS-7-x86_64-DVD-1908-v2.iso): Permission denied at /var/www/html/nextcloud/lib/private/Files/Storage/Local.php#123
This is not just for this specific example, but happens to all folders (I’ve tried), by multiple users.
Is this the first time you’ve seen this error? (Y/N): N
Have seen this error before, but not consistently.
Steps to replicate it:
- Try to delete or move/rename a folder
The output of your Nextcloud log in Admin > Logging:
See above
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 => 'localhost',
1 => '*********',
),
'datadirectory' => '*********',
'dbtype' => 'mysql',
'version' => '21.0.5.1',
'mysql.utf8mb4' => true,
'overwrite.cli.url' => 'http://www.localhost/nextcloud',
'dbname' => '*********',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'dbuser' => '*********',
'dbpassword' => '*********',
'installed' => true,
'maintenance' => false,
'memcache.local' => '\\OC\\Memcache\\APCu',
'mail_smtpmode' => 'smtp',
'mail_smtpsecure' => 'tls',
'mail_sendmailmode' => 'smtp',
'mail_from_address' => ''*********',',
'mail_domain' => '*********',
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpauth' => 1,
'mail_smtpname' => '*********',
'mail_smtppassword' => '*********',
'mail_smtphost' => '*********',
'mail_smtpport' => '587',
'default_phone_region' => '********',
'theme' => '',
'loglevel' => 0,
'enable_previews' => true,
'onlyoffice' =>
array (
'verify_peer_off' => true,
),
'updater.release.channel' => 'stable',
'preview_libreoffice_path' => '/usr/bin/libreoffice',
'enabledPreviewProviders' =>
array (
0 => 'OC\\Preview\\TXT',
1 => 'OC\\Preview\\MarkDown',
2 => 'OC\\Preview\\OpenDocument',
3 => 'OC\\Preview\\PDF',
4 => 'OC\\Preview\\MSOffice2003',
5 => 'OC\\Preview\\MSOfficeDoc',
6 => 'OC\\Preview\\PDF',
7 => 'OC\\Preview\\Image',
8 => 'OC\\Preview\\Photoshop',
9 => 'OC\\Preview\\TIFF',
10 => 'OC\\Preview\\SVG',
11 => 'OC\\Preview\\Font',
12 => 'OC\\Preview\\MP3',
13 => 'OC\\Preview\\Movie',
14 => 'OC\\Preview\\MKV',
15 => 'OC\\Preview\\MP4',
16 => 'OC\\Preview\\AVI',
),
);
The output of your Apache/nginx/system log in /var/log/____:
I did not see any relevant apach logs
Appreciate your help!