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Getting help
In order to help you as efficiently (and quickly!) as possible, please fill in as much of the below requested information as you can.
Before clicking submit: Please check if your query is already addressed via the following resources:
- Official documentation (searchable and regularly updated)
- How to topics and FAQs
- Forum search
(Utilizing these existing resources is typically faster. It also helps reduce the load on our generous volunteers while elevating the signal to noise ratio of the forums otherwise arising from the same queries being posted repeatedly).
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. 
The Basics
- Nextcloud Server version (e.g., 29.x.x):
nextcloud 31.0.4snap1 47611 latest/stable
- Operating system and version (e.g., Ubuntu 24.04):
Ubuntu 22.04.5 LTS
- Web server and version (e.g, Apache 2.4.25):
nextcloud 31.0.4snap1 47611 latest/stable
- Reverse proxy and version _(e.g. nginx 1.27.2)
n/a
- PHP version (e.g, 8.3):
nextcloud 31.0.4snap1 47611 latest/stable
- Is this the first time you’ve seen this error? (Yes / No):
replace me
- When did this problem seem to first start?
When I did occ group:delete Ops
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
snap
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
no
Summary of the issue you are facing:
If I delete the empty group gid Ops my NC instance dies with “Internal Server Error”
Same outcome if done via occ or webui
occ group:info Ops
groupID: Ops
displayName: DO-NOT-DELETE
backends:
Database
occ group:delete Ops
Group "Ops" was removed
Log entries
nextcloud.log when I try and log in afterwards
{"reqId":"M5tp3aKiPkmxljo0DLcp","level":3,"time":"2025-04-28T18:01:46+00:00","remoteAddr":"1.2.3.4","user":"user.name","app":"index","method":"POST","url":"/index.php/login","message":"array_diff(): Argument #2 must be of type array, stdClass given in file '/snap/nextcloud/47611/htdocs/lib/private/Share20/ShareDisableChecker.php' line 59","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:137.0) Gecko/20100101 Firefox/137.0","version":"31.0.4.1","exception":{"Exception":"Exception","Message":"array_diff(): Argument #2 must be of type array, stdClass given in file '/snap/nextcloud/47611/htdocs/lib/private/Share20/ShareDisableChecker.php' line 59","Code":0,"Trace":[{"file":"/snap/nextcloud/47611/htdocs/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Route/Router.php","line":307,"function":"main","class":"OC\AppFramework\App","type":"::"},{"file":"/snap/nextcloud/47611/htdocs/lib/base.php","line":1025,"function":"match","class":"OC\Route\Router","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/index.php","line":24,"function":"handleRequest","class":"OC","type":"::"}],"File":"/snap/nextcloud/47611/htdocs/lib/private/AppFramework/Http/Dispatcher.php","Line":146,"Previous":{"Exception":"TypeError","Message":"array_diff(): Argument #2 must be of type array, stdClass given","Code":0,"Trace":[{"file":"/snap/nextcloud/47611/htdocs/lib/private/Share20/ShareDisableChecker.php","line":59,"function":"array_diff"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Files/SetupManager.php","line":120,"function":"sharingDisabledForUser","class":"OC\Share20\ShareDisableChecker","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Files/SetupManager.php","line":332,"function":"setupBuiltinWrappers","class":"OC\Files\SetupManager","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Files/SetupManager.php","line":223,"function":"setupRoot","class":"OC\Files\SetupManager","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Files/SetupManager.php","line":308,"function":"oneTimeUserSetup","class":"OC\Files\SetupManager","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Files/SetupManager.php","line":203,"function":"setupForUserWith","class":"OC\Files\SetupManager","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Files/Filesystem.php","line":332,"function":"setupForUser","class":"OC\Files\SetupManager","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Cache/File.php","line":37,"function":"initMountPoints","class":"OC\Files\Filesystem","type":"::"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Cache/File.php","line":158,"function":"getStorage","class":"OC\Cache\File","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/base.php","line":860,"function":"gc","class":"OC\Cache\File","type":"->"},{"function":"{closure}","class":"OC","type":"::","args":["*** sensitive parameters replaced "]},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Hooks/EmitterTrait.php","line":88,"function":"call_user_func_array"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Hooks/PublicEmitter.php","line":22,"function":"emit","class":"OC\Hooks\BasicEmitter","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/User/Session.php","line":350,"function":"emit","class":"OC\Hooks\PublicEmitter","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/CompleteLoginCommand.php","line":22,"function":"completeLogin","class":"OC\User\Session","type":"->","args":[" sensitive parameters replaced "]},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/ALoginCommand.php","line":22,"function":"process","class":"OC\Authentication\Login\CompleteLoginCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/LoggedInCheckCommand.php","line":41,"function":"processNextOrFinishSuccessfully","class":"OC\Authentication\Login\ALoginCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/ALoginCommand.php","line":22,"function":"process","class":"OC\Authentication\Login\LoggedInCheckCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/EmailLoginCommand.php","line":51,"function":"processNextOrFinishSuccessfully","class":"OC\Authentication\Login\ALoginCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/ALoginCommand.php","line":22,"function":"process","class":"OC\Authentication\Login\EmailLoginCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/UidLoginCommand.php","line":36,"function":"processNextOrFinishSuccessfully","class":"OC\Authentication\Login\ALoginCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/ALoginCommand.php","line":22,"function":"process","class":"OC\Authentication\Login\UidLoginCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/UserDisabledCheckCommand.php","line":39,"function":"processNextOrFinishSuccessfully","class":"OC\Authentication\Login\ALoginCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/ALoginCommand.php","line":22,"function":"process","class":"OC\Authentication\Login\UserDisabledCheckCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/PreLoginHookCommand.php","line":34,"function":"processNextOrFinishSuccessfully","class":"OC\Authentication\Login\ALoginCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Authentication/Login/Chain.php","line":45,"function":"process","class":"OC\Authentication\Login\PreLoginHookCommand","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/core/Controller/LoginController.php","line":344,"function":"process","class":"OC\Authentication\Login\Chain","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/AppFramework/Http/Dispatcher.php","line":200,"function":"tryLogin","class":"OC\Core\Controller\LoginController","type":"->","args":[" sensitive parameters replaced ***"]},{"file":"/snap/nextcloud/47611/htdocs/lib/private/AppFramework/Http/Dispatcher.php","line":114,"function":"executeController","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/lib/private/Route/Router.php","line":307,"function":"main","class":"OC\AppFramework\App","type":"::"},{"file":"/snap/nextcloud/47611/htdocs/lib/base.php","line":1025,"function":"match","class":"OC\Route\Router","type":"->"},{"file":"/snap/nextcloud/47611/htdocs/index.php","line":24,"function":"handleRequest","class":"OC","type":"::"}],"File":"/snap/nextcloud/47611/htdocs/lib/private/Share20/ShareDisableChecker.php","Line":59},"message":"array_diff(): Argument #2 must be of type array, stdClass given in file '/snap/nextcloud/47611/htdocs/lib/private/Share20/ShareDisableChecker.php' line 59","exception":{},"CustomMessage":"array_diff(): Argument #2 must be of type array, stdClass given in file '/snap/nextcloud/47611/htdocs/lib/private/Share20/ShareDisableChecker.php' line 59"}}
Configuration
Nextcloud
The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):
occ config:list system
{
"system": {
"apps_paths": [
{
"path": "\/snap\/nextcloud\/current\/htdocs\/apps",
"url": "\/apps",
"writable": false
},
{
"path": "\/var\/snap\/nextcloud\/current\/nextcloud\/extra-apps",
"url": "\/extra-apps",
"writable": true
}
],
"supportedDatabases": [
"mysql"
],
"memcache.locking": "\\OC\\Memcache\\Redis",
"memcache.local": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"port": 0
},
"log_type": "file",
"logfile": "\/var\/snap\/nextcloud\/current\/logs\/nextcloud.log",
"logfilemode": 420,
"instanceid": "***REMOVED SENSITIVE VALUE***",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"localhost",
"cloud.homelesshealthlink.com",
"34.240.186.204"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"version": "31.0.4.1",
"overwrite.cli.url": "http:\/\/localhost",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbport": "",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"default_phone_region": "IE",
"installed": true,
"maintenance": false,
"mail_smtpmode": "smtp",
"mail_sendmailmode": "smtp",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "587",
"loglevel": 1,
"mail_smtpauth": 1,
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"skeletondirectory": "",
"auth.webauthn.enabled": false,
"defaultapp": "files",
"theme": "",
"maintenance_window_start": 1,
"simpleSignUpLink.shown": false,
"log.condition": {
"apps": [
"admin_audit"
]
}
}
}
Apps
occ app:list
Enabled:
- activity: 4.0.0
- admin_audit: 1.21.0
- announcementcenter: 7.1.0
- app_api: 5.0.2
- bruteforcesettings: 4.0.0
- circles: 31.0.0
- cloud_federation_api: 1.14.0
- comments: 1.21.0
- contactsinteraction: 1.12.0
- dashboard: 7.11.0
- dav: 1.33.0
- encryption: 2.19.0
- federatedfilesharing: 1.21.0
- federation: 1.21.0
- files: 2.3.1
- files_antivirus: 6.0.0
- files_downloadlimit: 4.0.0
- files_external: 1.23.0
- files_pdfviewer: 4.0.0
- files_reminders: 1.4.0
- files_retention: 2.0.1
- files_sharing: 1.23.1
- files_trashbin: 1.21.0
- files_versions: 1.24.0
- group_everyone: 0.1.17
- groupfolders: 19.0.4
- logreader: 4.0.0
- lookup_server_connector: 1.19.0
- nextcloud_announcements: 3.0.0
- notifications: 4.0.0
- oauth2: 1.19.1
- password_policy: 3.0.0
- photos: 4.0.0-dev.1
- privacy: 3.0.0
- profile: 1.0.0
- provisioning_api: 1.21.0
- recommendations: 4.0.0
- registration: 2.7.0
- related_resources: 2.0.0
- serverinfo: 3.0.0
- settings: 1.14.0
- sharebymail: 1.21.0
- support: 3.0.0
- systemtags: 1.21.1
- tasks: 0.16.1
- text: 5.0.0
- theming: 2.6.1
- twofactor_backupcodes: 1.20.0
- twofactor_totp: 13.0.0-dev.0
- user_status: 1.11.0
- user_usage_report: 2.0.0
- viewer: 4.0.0
- webhook_listeners: 1.2.0
- workflowengine: 2.13.0
Disabled:
- files_downloadactivity: 1.18.1 (installed 1.18.1)
- files_rightclick: 0.15.1 (installed 1.6.0)
- firstrunwizard: 4.0.0 (installed 2.16.0)
- survey_client: 3.0.0 (installed 1.14.0)
- suspicious_login: 9.0.1 (installed 5.0.0)
- twofactor_email: 2.8.0 (installed 2.8.0)
- twofactor_nextcloud_notification: 5.0.0 (installed 3.10.0)
- user_ldap: 1.22.0
- weather_status: 1.11.0 (installed 1.6.0)