plugin-Group folders issue：path needs to be relative to the system wide data folder and point to a user specific file

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Nextcloud version (eg, 20.0.5): 20.0.6
Operating system and version (eg, Ubuntu 20.04): centos7
Apache or nginx version (eg, Apache 2.4.25): Install nextcloud by Docker
PHP version (eg, 7.4): Install nextcloud by Docker

The issue you are facing: Uploading files to the Group folders

Is this the first time you’ve seen this error? (Y/N): Just getting started

Steps to replicate it:

  1. After start the plugin Group folders，I create a Group folder。
  2. When I upload a picture to the group folder, this prompt pops up：path needs to be relative to the system wide data folder and point to a user specific file。The uploaded picture cannot be seen。
    image
  3. When I re-upload the picture agian，pops up conflict selection
    image
    image718×568 62.1 KB
  4. Select the New File or the existing file，even choose “Cancel”，The picture appears。

The output of your Nextcloud log in Admin > Logging:

Error	PHP	Error: Cannot modify header information - headers already sent by (output started at /var/www/html/3rdparty/sabre/http/lib/Sapi.php:132) at /var/www/html/apps/dav/lib/Connector/Sabre/File.php#691
<<closure>>

OC\Log\ErrorHandler::onError(2, "Cannot modi ... )", "/var/www/ht ... p", 691, { string: "X ... "})

/var/www/html/apps/dav/lib/Connector/Sabre/File.php - line 691:

header("X-Hash-MD5: ... 8")

/var/www/html/apps/dav/lib/Connector/Sabre/File.php - line 189:

OCA\DAV\Connector\Sabre\File->header("X-Hash-MD5: ... 8")

<<closure>>

OCA\DAV\Connector\Sabre\File->OCA\DAV\Connector\Sabre\{closure}("*** sensiti ... *")

/var/www/html/lib/private/Files/Stream/HashWrapper.php - line 71:

call_user_func(Closure {}, "*** sensiti ... *")

<<closure>>

OC\Files\Stream\HashWrapper->stream_close()

/var/www/html/apps/files_external/3rdparty/icewind/streams/src/Wrapper.php - line 132:

fclose(null)

/var/www/html/lib/private/Files/Stream/HashWrapper.php - line 75:

Icewind\Streams\Wrapper->stream_close()

<<closure>>

OC\Files\Stream\HashWrapper->stream_close()

/var/www/html/apps/files_external/3rdparty/icewind/streams/src/Wrapper.php - line 132:

fclose(null)

/var/www/html/lib/private/Files/Stream/HashWrapper.php - line 75:

Icewind\Streams\Wrapper->stream_close()

/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php - line 319:

OC\Files\Stream\HashWrapper->stream_close()

/var/www/html/apps/dav/appinfo/v1/webdav.php - line 84:

Sabre\DAV\Server->exec()

/var/www/html/remote.php - line 167:

require_once("/var/www/ht ... p")

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

<?php
$CONFIG = array (
  'htaccess.RewriteBase' => '/',
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'apps_paths' => 
  array (
    0 => 
    array (
      'path' => '/var/www/html/apps',
      'url' => '/apps',
      'writable' => false,
    ),
    1 => 
    array (
      'path' => '/var/www/html/custom_apps',
      'url' => '/custom_apps',
      'writable' => true,
    ),
  ),
  'instanceid' => 'ocde2zfqy9m1',
  'passwordsalt' => '  ',
  'secret' => '  ',
  'trusted_domains' => 
  array (
    0 => 'x.x.x.x:8080',
  ),
  'datadirectory' => '/var/www/html/data',
  'dbtype' => 'mysql',
  'version' => '20.0.6.1',
  'overwrite.cli.url' => 'http://x.x.x.x:8080',
  'dbname' => 'nextcloud',
  'dbhost' => 'xx.xx.xx.xx:xxxx',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => 'oc_admin',
  'dbpassword' => ' ',
  'installed' => true,
  'ldapIgnoreNamingRules' => false,
  'ldapProviderFactory' => 'OCA\\User_LDAP\\LDAPProviderFactory',
  'mail_smtpsecure' => 'ssl',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_smtpauth' => 1,
  'mail_smtpname' => 'admin@it.com',
  'mail_smtppassword' => '123456',
  'allow_local_remote_servers' => true,
  'twofactor_enforced' => 'false',
  'twofactor_enforced_groups' => 
  array (
  ),
  'twofactor_enforced_excluded_groups' => 
  array (
  ),
);

The output of your Apache/nginx/system log in /var/log/____:

PASTE HERE