Error: Call to a member function getPath() on null in /lib/private/Files/Filesystem.php:878

[Linuxfabrik]

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Steps to reproduce

Not known

Expected behaviour

Actual behaviour

On Cronjob /var/www/html/nextcloud/cron.php:

Error: Call to a member function getPath() on null in /var/www/html/nextcloud/lib/private/Files/Filesystem.php:878
Stack trace:
#0 /var/www/html/nextcloud/lib/private/Encryption/Update.php(107): OC\Files\Filesystem::getPath()
#1 /var/www/html/nextcloud/lib/private/Encryption/HookManager.php(40): OC\Encryption\Update->postUnshared()
#2 /var/www/html/nextcloud/lib/private/legacy/OC_Hook.php(106): OC\Encryption\HookManager::postUnshared()
#3 /var/www/html/nextcloud/lib/private/Share20/LegacyHooks.php(84): OC_Hook::emit()
#4 /var/www/html/nextcloud/3rdparty/symfony/event-dispatcher/EventDispatcher.php(264): OC\Share20\LegacyHooks->postUnshare()
#5 /var/www/html/nextcloud/3rdparty/symfony/event-dispatcher/EventDispatcher.php(239): Symfony\Component\EventDispatcher\EventDispatcher->doDispatch()
#6 /var/www/html/nextcloud/3rdparty/symfony/event-dispatcher/EventDispatcher.php(73): Symfony\Component\EventDispatcher\EventDispatcher->callListeners()
#7 /var/www/html/nextcloud/lib/private/EventDispatcher/SymfonyAdapter.php(123): Symfony\Component\EventDispatcher\EventDispatcher->dispatch()
#8 /var/www/html/nextcloud/lib/private/Share20/Manager.php(1202): OC\EventDispatcher\SymfonyAdapter->dispatch()
#9 /var/www/html/nextcloud/lib/private/Share20/Manager.php(1510): OC\Share20\Manager->deleteShare()
#10 /var/www/html/nextcloud/lib/private/Share20/Manager.php(1411): OC\Share20\Manager->checkExpireDate()
#11 /var/www/html/nextcloud/apps/files_sharing/lib/ExpireSharesJob.php(97): OC\Share20\Manager->getShareById()
#12 /var/www/html/nextcloud/lib/public/BackgroundJob/Job.php(79): OCA\Files_Sharing\ExpireSharesJob->run()
#13 /var/www/html/nextcloud/lib/public/BackgroundJob/TimedJob.php(63): OCP\BackgroundJob\Job->execute()
#14 /var/www/html/nextcloud/cron.php(127): OCP\BackgroundJob\TimedJob->execute()
#15 {main}

Server configuration

Operating system:
CentOS 7

Web server:
Apache 2.4.6

Database:
MariaDB-server-10.3.31-1

PHP version:
PHP 7.4.25
Zend Engine v3.4.0

Nextcloud version: (see Nextcloud admin page)
22.2.0

Updated from an older Nextcloud/ownCloud or fresh install:
Updated from Nextcloud 21

Where did you install Nextcloud from:
https://download.nextcloud.com/server/releases

Signing status:

Signing status

Login as admin user into your Nextcloud and access 
http://example.com/index.php/settings/integrity/failed 
paste the results here.

No errors have been found.

List of activated apps:

App list

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your Nextcloud installation folder

Enabled:
  - accessibility: 1.8.0
  - activity: 2.15.0
  - apporder: 0.13.0
  - bookmarks: 10.0.2
  - bruteforcesettings: 2.2.0
  - calendar: 2.3.4
  - checksum: 1.1.2
  - circles: 22.1.1
  - cloud_federation_api: 1.5.0
  - comments: 1.12.0
  - contacts: 4.0.6
  - contactsinteraction: 1.3.0
  - dashboard: 7.2.0
  - dav: 1.19.0
  - encryption: 2.10.0
  - external: 3.9.0
  - federatedfilesharing: 1.12.0
  - federation: 1.12.0
  - files: 1.17.0
  - files_external: 1.13.0
  - files_markdown: 2.3.4
  - files_pdfviewer: 2.3.0
  - files_rightclick: 1.1.0
  - files_sharing: 1.14.0
  - files_trashbin: 1.12.0
  - files_versions: 1.15.0
  - files_videoplayer: 1.11.0
  - firstrunwizard: 2.11.0
  - groupfolders: 10.0.0
  - impersonate: 1.9.0
  - logreader: 2.7.0
  - lookup_server_connector: 1.10.0
  - mail: 1.10.5
  - metadata: 0.14.0
  - nextcloud_announcements: 1.11.0
  - notifications: 2.10.1
  - oauth2: 1.10.0
  - password_policy: 1.12.0
  - photos: 1.4.0
  - privacy: 1.6.0
  - provisioning_api: 1.12.0
  - quota_warning: 1.11.0
  - recommendations: 1.1.0
  - richdocuments: 4.2.3
  - serverinfo: 1.12.0
  - settings: 1.4.0
  - sharebymail: 1.12.0
  - sharingpath: 0.4.3
  - support: 1.5.0
  - tasks: 0.14.2
  - text: 3.3.0
  - theming: 1.13.0
  - twofactor_backupcodes: 1.11.0
  - twofactor_totp: 6.1.0
  - twofactor_u2f: 6.2.0
  - unsplash: 1.2.3
  - updatenotification: 1.12.0
  - user_status: 1.2.0
  - viewer: 1.6.0
  - weather_status: 1.2.0
  - workflowengine: 2.4.0
Disabled:
  - admin_audit
  - notes
  - socialsharing_diaspora
  - socialsharing_facebook
  - socialsharing_twitter
  - survey_client
  - systemtags
  - user_ldap

Nextcloud configuration:

Config report

If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your Nextcloud installation folder

{
    "system": {
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "localhost",
            "***"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "22.2.0.2",
        "overwrite.cli.url": "***",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "overwritecondaddr": "***",
        "overwritehost": "***",
        "overwriteprotocol": "https",
        "overwritewebroot": "\/",
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "filelocking.enabled": true,
        "log_rotate_size": 10485760,
        "loglevel": 3,
        "logtimezone": "Europe\/Zurich",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "dbindex": 0,
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379,
            "timeout": 0
        },
        "maintenance": false,
        "skeletondirectory": "\/var\/www\/html\/nextcloud\/core\/custom_skeleton",
        "theme": "",
        "app_install_overwrite": [
            "sharerenamer",
            "calendar"
        ],
        "encryption.legacy_format_support": false,
        "encryption.key_storage_migrated": false,
        "default_phone_region": "CH"
    }
}

Insert your config.php content here. 
Make sure to remove all sensitive content such as passwords. (e.g. database password, passwordsalt, secret, smtp password, …)

<?php
$CONFIG = array (
  'passwordsalt' => '***',
  'secret' => '***',
  'trusted_domains' =>
  array (
    0 => 'localhost',
    1 => '***',
  ),
  'datadirectory' => '/var/www/html/nextcloud/data',
  'dbtype' => 'mysql',
  'version' => '22.2.0.2',
  'overwrite.cli.url' => '***',
  'dbname' => 'nextcloud',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => 'oc_nextcloud-adm',
  'dbpassword' => '***',
  'installed' => true,
  'instanceid' => '***,
  'overwritecondaddr' => '***',
  'overwritehost' => '***',
  'overwriteprotocol' => 'https',
  'overwritewebroot' => '/',
  'trusted_proxies' =>
  array (
    0 => '***',
  ),
  'filelocking.enabled' => true,
  'log_rotate_size' => 10485760,
  'loglevel' => 3,
  'logtimezone' => 'Europe/Zurich',
  'mail_domain' => '***',
  'mail_from_address' => 'noreply',
  'mail_smtphost' => 'localhost',
  'mail_smtpmode' => 'smtp',
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'redis' =>
  array (
    'dbindex' => 0,
    'host' => '127.0.0.1',
    'port' => 6379,
    'timeout' => 0,
  ),
  'maintenance' => false,
  'skeletondirectory' => '/var/www/html/nextcloud/core/custom_skeleton',
  'theme' => '',
  'app_install_overwrite' =>
  array (
    0 => 'sharerenamer',
    1 => 'calendar',
  ),
  'encryption.legacy_format_support' => false,
  'encryption.key_storage_migrated' => false,
  'default_phone_region' => 'CH',
);

Are you using external storage, if yes which one: no

Are you using encryption: no

Are you using an external user-backend, if yes which one: no

[dedisupp]

Have you any update on this case ?
We meet the same error

[PVince81]

I'm guessing that we're missing a setupFS / teardownFS around that code.
The tricky part is figuring out for what user to set it up, the one from "uid_owner" perhaps ?

Usually cron jobs don't setup the FS for each user as it's slower, so it's only done on demand.
Here it seems the "on-demand" bit is missing.

[PVince81]

idea: in the background job:

• add "uid_owner" to the SQL statements above
• add setupFS / tearDown around the try/catch and pass the share owner to setupFS()

[PVince81]

• maybe sort by uid_owner also to avoid setting up the same user repeatedly ? (beware whether an index exists for this)

[dedisupp]

Hi,
Many thanks for your suggestion.
Can you send to me the good code to place or any explanation on the setupFS function ?
For example, I've found this code:
public static function getMountManager($user = '') {
if (!self::$mounts) {
\OC_Util::setupFS($user);
}
return self::$mounts;
}

Do you mean that I need to add some parameter on the line "\OC_Util::setupFS($user);" like "\OC_Util::setupFS($user,$uid_owner);" ?
But I can't finf any variable named uid_owner on the PHP file (Filesystem.php)...

How can I add a field in the SQL statement ?

Thanks

Regards,

[dedisupp]

I don't know if this can help, but in the mean time, the Windows agent is unable to permit share management. When we right click on a file, then select Nextcloud | Share options, the window tries to open, but closes instantly...

[dedisupp]

I've enabled log on MySQL during a share creation.

I see this strange behaviour (SQL queries):

It seems that hi first save the share:
INSERT INTO oc_activity (app, subject, subjectparams, message, messageparams, file, link, user, affecteduser, timestamp, priority, type, object_type, object_id) VALUES('files_sharing', 'shared_link_self', '[{"260805":"\/Desktop\/Analytics Stop.jpg"}]', '', '[]', '/Desktop/Analytics Stop.jpg', 'https://xxx.myserver.zzz/index.php/apps/files/?dir=/Desktop', 'user1', 'user1', '1646409691', '30', 'shared', 'files', '260805')

And a few seconds later, it seems that the share is marked as expired:
INSERT INTO oc_activity (app, subject, subjectparams, message, messageparams, file, link, user, affecteduser, timestamp, priority, type, object_type, object_id) VALUES('files_sharing', 'link_expired', '[{"260805":"\/Analytics Stop.jpg"}]', '', '[]', '/Analytics Stop.jpg', 'https://xxx.myserver.zzz/index.php/apps/files/?dir=/', '', 'user1', '1646409699', '30', 'shared', 'files', '260805')
SELECT * FROM oc_share WHERE (parent = '1312') AND (share_type IN (0, 1, 3)) AND ((item_type = 'file') OR (item_type = 'folder')) ORDER BY id ASC
DELETE FROM oc_share WHERE id = '1312'

I'm not sure that this is normal or not. Just I found this 2 queries very strange...

Thanks !

[dedisupp]

Hello,
We didn't receive any reply from you do you have any updates please?
We are getting stuck on this case, and it is causing a lot of troubles for us.
Thank you very much for your help.

[CarlSchwan]

I started working on this #31771 still wip

[dedisupp]

Hello,

The last major update of Nextcloud is supposed to resolve this issue, but we are still facing it on some of our nextcloud hosts despite the update.
Can you please tell which fontion or database record should we verify ?

Regards