IGroupManager::isInGroup called with $userId=null

[ChristophWurst]

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Describe the bug

TypeError: OC\Group\Manager::getUserIdGroupIds(): Argument #1 ($uid) must be of type string, null given, called in /var/www/nextcloud/lib/private/Group/Manager.php on line 374
#13 /var/www/nextcloud/lib/private/Group/Manager.php(391): OC\Group\Manager::getUserIdGroupIds
#12 /var/www/nextcloud/lib/private/Group/Manager.php(374): OC\Group\Manager::isInGroup
#11 /deck/lib/Service/PermissionService.php(234): OCA\Deck\Service\PermissionService::userCan
#10 /deck/lib/Service/PermissionService.php(115): OCA\Deck\Service\PermissionService::getPermissions
#9 /deck/lib/Service/PermissionService.php(160): OCA\Deck\Service\PermissionService::checkPermission
#8 /deck/lib/Activity/ActivityManager.php(571): OCA\Deck\Activity\ActivityManager::canSeeCardActivity
#7 /deck/lib/Activity/DeckProvider.php(131): OCA\Deck\Activity\DeckProvider::parse
#6 /activity/lib/MailQueueHandler.php(436): OCA\Activity\MailQueueHandler::parseEvent
#5 /activity/lib/MailQueueHandler.php(333): OCA\Activity\MailQueueHandler::sendEmailToUser
#4 /activity/lib/MailQueueHandler.php(130): OCA\Activity\MailQueueHandler::sendEmails
#3 /activity/lib/BackgroundJob/EmailNotification.php(60): OCA\Activity\BackgroundJob\EmailNotification::run
#2 /var/www/nextcloud/lib/private/BackgroundJob/Job.php(54): OC\BackgroundJob\Job::execute
#1 /var/www/nextcloud/lib/private/BackgroundJob/TimedJob.php(60): OC\BackgroundJob\TimedJob::execute
#0 /var/www/nextcloud/cron.php(152): null

Found on private Sentry https://nextcloud-gmbh.sentry.io/issues/4893345585

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

No errs

Screenshots
If applicable, add screenshots to help explain your problem.

Client details:

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version 28.0.2.0
• Device: [e.g. iPhone6, desktop]

Server details

Operating system:

Web server:

Database:

PHP version:

Nextcloud version: (see Nextcloud admin page)

Where did you install Nextcloud from:

Signing status:

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

List of activated apps:

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

Nextcloud configuration:

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

or

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

Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/...

Logs

Nextcloud log (data/nextcloud.log)

TypeError: OC\Group\Manager::getUserIdGroupIds(): Argument #1 ($uid) must be of type string, null given, called in /var/www/nextcloud/lib/private/Group/Manager.php on line 374
#13 /var/www/nextcloud/lib/private/Group/Manager.php(391): OC\Group\Manager::getUserIdGroupIds
#12 /var/www/nextcloud/lib/private/Group/Manager.php(374): OC\Group\Manager::isInGroup
#11 /deck/lib/Service/PermissionService.php(234): OCA\Deck\Service\PermissionService::userCan
#10 /deck/lib/Service/PermissionService.php(115): OCA\Deck\Service\PermissionService::getPermissions
#9 /deck/lib/Service/PermissionService.php(160): OCA\Deck\Service\PermissionService::checkPermission
#8 /deck/lib/Activity/ActivityManager.php(571): OCA\Deck\Activity\ActivityManager::canSeeCardActivity
#7 /deck/lib/Activity/DeckProvider.php(131): OCA\Deck\Activity\DeckProvider::parse
#6 /activity/lib/MailQueueHandler.php(436): OCA\Activity\MailQueueHandler::parseEvent
#5 /activity/lib/MailQueueHandler.php(333): OCA\Activity\MailQueueHandler::sendEmailToUser
#4 /activity/lib/MailQueueHandler.php(130): OCA\Activity\MailQueueHandler::sendEmails
#3 /activity/lib/BackgroundJob/EmailNotification.php(60): OCA\Activity\BackgroundJob\EmailNotification::run
#2 /var/www/nextcloud/lib/private/BackgroundJob/Job.php(54): OC\BackgroundJob\Job::execute
#1 /var/www/nextcloud/lib/private/BackgroundJob/TimedJob.php(60): OC\BackgroundJob\TimedJob::execute
#0 /var/www/nextcloud/cron.php(152): null

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log
c) ...

[ChristophWurst]

Error is similar to #3002 but stack frames are different.

[katerasrael]

Same bug here - v28.0.2.5

[joshtrichards]

Similar reports (in addition to #3002 already noted):

• Activity app sends no Deck updates #5536
• empty notification emails activity#1521
• OC\Group\Manager::getUserIdGroupIds(): Argument #1 ($uid) must be of type string, null given activity#1537
• email notifications NOT working #5575
• https://help.nextcloud.com/t/typeerror-oc-group-manager-getuseridgroupids/181248

Don't have time to triage all these today, but noting in case someone feels like sorting out the duplicates or pick this up later.

[Pietro-Aretino]

Seems relevant to my issue with Deck breaking share links: #5535

Also same issue here: #5576

[kottonau]

Is anybody working on this? Or is there a workaround? Unfortunately, we can't restore a Backup with a NC 27 install, because we discovered this after Users did many changes. So restore is not an option either.

We are currently on 28.0.2.

[Pietro-Aretino]

Is anybody working on this? Or is there a workaround? Unfortunately, we can't restore a Backup with a NC 27 install, because we discovered this after Users did many changes. So restore is not an option either.

We are currently on 28.0.2.

@kottonau Have you tried rolling-back the Deck app to 1.8.5? I don't know if it is compatible with NC v.28 but it could be worth a shot.

I have my users on Nextcloud 25, updating Deck app to most recent version breaks many things for my instance.

Here are the steps to rollback your Deck app:

If it can be of use to anyone, the only way I was able to fix my issue was downgrading to Deck 1.8.5.
Make a backup of your Nextcloud and make a backup of your DB before making any of these modifications.

1. You can download older versions of Deck here: https://apps.nextcloud.com/apps/deck/releases?platform=25#25
2. Login to your Nextcloud server as an admin and disable the Deck app.
3. SSH into your Nextcloud server, go to your apps directory (/var/www/nextcloud/apps/)
4. Move the folder "deck" somewhere else /home/ or /root/ or anywhere else, no need to delete, just in case something goes wrong, you can plop it right back.
5. Download and extract the 1.8.5 version of deck from the aforementioned link
6. Move the 1.8.5 deck folder to the same location /var/www/nextcloud/apps/
7. Give the the same user rights and permissions "chown -r www-data:www-data deck/"
8. Log back into your Nextcloud server and now Enable Deck, you should see your Nextcloud server telling you to update the Deck app.

I tested my link shares and the Deck app and both of them are now functioning correctly.

If you have a cron job to auto-update apps and what not, ensure to disable that.

[kottonau]

@Pietro-Aretino, thank you for the suggestion. I have a feeling we would break more things by downgrading. But I'll look into it.
In the meantime we will check the activities manually hehe

[juliusknorr]

Should be fixed by #5533

[geamak]

Deck version 1.12.2 fixed for me

[kottonau]

Thanks for fixing it, @juliushaertl !