File-upload unusable with no user quota (hard to debug)
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Since Sep 5, 2025.
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Description
Describe the bug
I run a NextCloud instance where all users have their quotas set to 0B and everything is in Group Folders. This means that file-upload fields in Forms are unusable, as a permissions error is thrown when trying to upload a file, and there seems to be nothing that can be done about it. Furthermore, the upload fails silently and users (form creators or form fillers) are very confused! Even the NotPermittedException error in the admin logs isn't as helpful as it might be (I just spent 15 minutes checking file permissions and scratching my head before I guessed that this might be the issue).
To Reproduce
Set user quota to 0B; user can no longer use file-upload on Forms, and will not understand why.
Expected behavior
Ideally, a way to use group folders for file-upload Forms. Or at least a notification or other indication that it's not going to work.
Nextcloud (please complete the following information):
- Nextcloud-Version: 31.0.8
- Forms-Version: 5.1.2
Browser log
Server returns 500 errors.
Additional context
Admin log shows:
Level: Error
Application: no app in context
Message: NotPermittedException Could not create folder "/<user>/files/Forms/unsubmitted/<timestamp>/2 - Test Form/3 - file-upload"
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