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:
- `Nextcloud 34.0.0`
* Operating system and version: - `#1 SMP PREEMPT Debian 1:6.18.34-1+rpt1 (2026-06-09)`
* Web server and version: - `Server version: Apache/2.4.67 (Debian)`
* Reverse proxy and version: - `nginx version: openresty/1.29.2.5`
* PHP version: - `PHP 8.4.22 (cli) (built: Jun 11 2026 00:28:28) (NTS)`
* Is this the first time you’ve seen this error? (Yes / No): - `yes`
* When did this problem seem to first start? - `recently`
* Installation method _(e.g. AlO, NCP, Bare Metal/Archive, etc.)_ - `OMV Container`
* Are you using CloudfIare, mod_security, or similar? _(Yes / No)_ - `No`
Summary of the issues you are facing:
I have a non stop stream of warnings like:
[no app in context] Warning: OCA\Dropbox\Notification\Notifier::prepare() threw \InvalidArgumentException which is deprecated. Throw \OCP\Notification\UnknownNotificationException when the notification is not known to your notifier and otherwise handle all \InvalidArgumentException yourself.
GET /ocs/v2.php/apps/notifications/api/v2/notifications?format=json
from 83.97.85.45 by johannes at 24 Jun 2026, 09:25:39
There is no App called Dropbox installed as you can see below.
Steps to replicate it (hint: details matter!):
Log entries
Nextcloud
```
{“reqId”:“GkQ0TV9zkOhMeTzFpFDs”,“level”:2,“time”:“2026-06-24T07:26:43+00:00”,“remoteAddr”:“83.97.85.45”,“user”:“king_admin”,“app”:“no app in context”,“method”:“GET”,“url”:“/ocs/v2.php/a
pps/notifications/api/v2/notifications”,“scriptName”:“/ocs/v2.php”,“message”:“OCA\\Dropbox\\Notification\\Notifier::prepare() threw \\InvalidArgumentException which is deprecated. Throw
\\OCP\\Notification\\UnknownNotificationException when the notification is not known to your notifier and otherwise handle all \\InvalidArgumentException yourself.”,“userAgent”:“Mozill
a/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0”,“version”:“34.0.0.12”,“data”:[]}
```
Web Browser
Apps
Enabled:
- activity: 7.0.0
- admin_audit: 1.24.0
- appstore: 1.0.0
- bookmarks: 16.2.2
- brewmemo: 0.7.0
- bruteforcesettings: 7.0.0
- calendar: 6.5.0
- camerarawpreviews: 1.1.1
- circles: 34.0.0
- cloud_federation_api: 1.18.0
- contacts: 8.7.1
- contactsinteraction: 1.15.0
- cookbook: 0.11.7
- dashboard: 7.14.0
- dav: 1.39.0
- encryption: 2.22.0
- eurooffice: 11.0.0
- federatedfilesharing: 1.24.0
- files: 2.6.0
- files_downloadlimit: 5.2.0-dev.0
- files_external: 1.26.0
- files_lock: 34.0.0
- files_pdfviewer: 7.0.0-dev.0
- files_sharing: 1.26.0
- files_trashbin: 1.24.0
- files_versions: 1.27.0
- firstrunwizard: 7.0.0-dev.0
- groupfolders: 22.0.1
- integration_dropbox: 5.0.0
- logreader: 7.0.0
- lookup_server_connector: 1.22.0
- nextcloud_announcements: 6.0.0
- notes: 6.0.0
- notifications: 7.0.0-dev.1
- oauth2: 1.22.0
- officeonline: 3.2.1
- password_policy: 6.0.0-dev.0
- photos: 7.0.0
- privacy: 6.0.0-dev.1
- profile: 1.3.0
- provisioning_api: 1.24.0
- recommendations: 7.0.0-dev.0
- serverinfo: 6.0.0
- settings: 1.17.0
- sharebymail: 1.24.0
- suspicious_login: 12.0.0-dev.0
- systemtags: 1.24.0
- theming: 2.9.0
- twofactor_backupcodes: 1.23.0
- twofactor_nextcloud_notification: 8.0.0
- twofactor_totp: 16.0.0
- updatenotification: 1.24.0
- uppush: 2.5.0
- user_status: 1.14.0
- viewer: 7.0.0-dev.0
- webhook_listeners: 1.6.0
- workflowengine: 2.16.0
Disabled:- app_api: 34.0.0 (installed 32.0.0)
- comments: 1.24.0 (installed 1.24.0)
- end_to_end_encryption: 2.1.1 (installed 2.1.1)
- federation: 1.24.0 (installed 1.24.0)
- files_reminders: 1.7.0 (installed 1.7.0)
- fulltextsearch: 33.0.0 (installed 33.0.0)
- office: 1.0.0 (installed 1.0.0)
- previewgenerator: 5.13.0 (installed 5.13.0)
- related_resources: 5.0.0-dev.0 (installed 5.0.0-dev.0)
- sentry: 8.18.6 (installed 8.18.6)
- support: 6.0.0 (installed 6.0.0)
- survey_client: 6.0.0-dev.0 (installed 6.0.0-dev.0)
- tables: 2.2.0 (installed 2.2.0)
- text: 8.0.0 (installed 8.0.0)
- user_ldap: 1.25.0 (installed 1.22.0)
- weather_status: 1.14.0 (installed 1.14.0)
