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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, 20.0.5): 25.0.3
Operating system and version (eg, Ubuntu 20.04): Red Hat 4.8.5-44
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4.48
PHP version (eg, 7.4): PHP 7.4.33
The issue you are facing:
some auto uploads files from nextcloud android are systematically blocked as locked files, so i cannot remove them, except by connecting in ssh to the server and deleting the locked database table (which is a massive move for just one or two files).
I don’t really understand why some files are put in locked state, and I undestand even less why those specific files are systematically locked (those are my signal app backups, the only characteristic i can think of is that they are big, more than 200Mo), but i suppose that when they have been successfully synchronized, I can safely suppress them if i want to, so i don’t need this lock operation.
So I wonder if there is a way to prevent them of being locked in the first place ? or to unlock them without connecting to the server ?
Is this the first time you’ve seen this error? (Y/N): N
Steps to replicate it:
- auto upload files of more than 200Mo from android nextcloud app
- wait untill upload and sync is complete
- try to delete them, impossible
The output of your Nextcloud log in Admin > Logging:
nothing recent
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
1 <?php
2 $CONFIG = array (
3 'instanceid' => '************',
4 'passwordsalt' => '******************************',
5 'secret' => '************************************************',
6 'trusted_domains' =>
7 array (
8 0 => 'nextcloud.hugulumu.fr',
9 ),
10 'datadirectory' => '/home/********/nextclouddata',
11 'dbtype' => 'mysql',
12 'version' => '25.0.3.2',
13 'overwrite.cli.url' => 'https://nextcloud.hugulumu.fr/nextcloud',
14 'dbname' => '****************',
15 'dbhost' => 'localhost',
16 'dbport' => '',
17 'dbtableprefix' => 'oc_',
18 'mysql.utf8mb4' => true,
19 'dbuser' => '****************',
20 'dbpassword' => '**********',
21 'installed' => true,
22 'maintenance' => false,
23 'filelocking.enabled' => true,
24 'theme' => '',
25 'loglevel' => 1,
26 'app_install_overwrite' =>
27 array (
28 0 => 'ownpad',
29 ),
30 'updater.secret' => '************************************************************',
31 'trashbin_retention_obligation' => 'auto, 90',
32 );
The output of your Apache/nginx/system log in /var/log/____:
cannot find
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.
cannot find