Incompatibility with groupfolders app when limiting LibreSign to groups

[w1n5l0w]

Describe the bug
When I limit the usage of LibreSign to a specific group (can be any group, doesn't have to be the admin-group) in the app settings, then all users who don't belong to this group can't access groupfolders it the WebUI of the file app anymore (access via synced Nextcloud Desktop app works). These user see the groupfolders in the File app, but they are only a link to the webdav endpoint and one can't access the groupfolders via WebUI.

To Reproduce
Steps to reproduce the behavior:

• I'm an admin user, the groufolders app is installed and there is at least one groupfolder created to which i have access to
• Go to 'App Settings' (/settings/apps/)
• Click on 'LibreSign' and limit the usage of the app to an group I am not a member of
• Go to 'Files app' (/apps/files/)
• I can't access the groupfolder anymore, the listed groupfolder only provides a link to /remote.php/dav/files///

Expected behavior
Any user can access the groupfolders to which s/he has access, no matter if the usage of the LibreSign app is limited to group(s)

Environment information (please complete the following information):

• OS: Debian Bookworm
• Browser: Doesn't matter if Firefox or Chromium
• LibreSign Version 9.2.0
• Nextcloud Server Version 29.0.3
• Logs (get the entries from nextcloud.log related with LibreSign i.e tail -f data/nextcloud.log|grep libresign)

{"reqId":"QoHC0DOxs3qTqDhpJNI2","level":3,"time":"2024-07-11T21:50:03+00:00","remoteAddr":"","user":"--","app":"core","method":"","url":"--","message":"Error while running background job OCA\\Libresign\\BackgroundJob\\UserDeleted (id: 321, arguments: null)","userAgent":"--","version":"29.0.3.4","exception":{"Exception":"TypeError","Message":"OCA\\Libresign\\Db\\FileMapper::neutralizeDeletedUser(): Argument #1 ($userId) must be of type string, null given, called in /srv/nextcloud/app/apps/libresign/lib/BackgroundJob/UserDeleted.php on line 39","Code":0,"Trace":[{"file":"/srv/nextcloud/app/apps/libresign/lib/BackgroundJob/UserDeleted.php","line":39,"function":"neutralizeDeletedUser","class":"OCA\\Libresign\\Db\\FileMapper","type":"->"},{"file":"/srv/nextcloud/app/lib/public/BackgroundJob/Job.php","line":80,"function":"run","class":"OCA\\Libresign\\BackgroundJob\\UserDeleted","type":"->"},{"file":"/srv/nextcloud/app/lib/public/BackgroundJob/QueuedJob.php","line":57,"function":"start","class":"OCP\\BackgroundJob\\Job","type":"->"},{"file":"/srv/nextcloud/app/lib/public/BackgroundJob/QueuedJob.php","line":47,"function":"start","class":"OCP\\BackgroundJob\\QueuedJob","type":"->"},{"file":"/srv/nextcloud/app/cron.php","line":177,"function":"execute","class":"OCP\\BackgroundJob\\QueuedJob","type":"->"}],"File":"/srv/nextcloud/app/apps/libresign/lib/Db/FileMapper.php","Line":227,"message":"Error while running background job OCA\\Libresign\\BackgroundJob\\UserDeleted (id: 321, arguments: null)","exception":{},"CustomMessage":"Error while running background job OCA\\Libresign\\BackgroundJob\\UserDeleted (id: 321, arguments: null)"}}
{"reqId":"aVnCH7YD4YIgqJMuDUC1","level":3,"time":"2024-07-11T22:15:02+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Trying to access array offset on value of type null at /srv/nextcloud/app/apps/libresign/lib/BackgroundJob/UserDeleted.php#34","userAgent":"--","version":"29.0.3.4","data":{"app":"PHP"}}
{"reqId":"aVnCH7YD4YIgqJMuDUC1","level":3,"time":"2024-07-11T22:15:02+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Trying to access array offset on value of type null at /srv/nextcloud/app/apps/libresign/lib/BackgroundJob/UserDeleted.php#35","userAgent":"--","version":"29.0.3.4","data":{"app":"PHP"}}
{"reqId":"aVnCH7YD4YIgqJMuDUC1","level":3,"time":"2024-07-11T22:15:02+00:00","remoteAddr":"","user":"--","app":"core","method":"","url":"--","message":"Error while running background job OCA\\Libresign\\BackgroundJob\\UserDeleted (id: 325, arguments: null)","userAgent":"--","version":"29.0.3.4","exception":{"Exception":"TypeError","Message":"OCA\\Libresign\\Db\\FileMapper::neutralizeDeletedUser(): Argument #1 ($userId) must be of type string, null given, called in /srv/nextcloud/app/apps/libresign/lib/BackgroundJob/UserDeleted.php on line 39","Code":0,"Trace":[{"file":"/srv/nextcloud/app/apps/libresign/lib/BackgroundJob/UserDeleted.php","line":39,"function":"neutralizeDeletedUser","class":"OCA\\Libresign\\Db\\FileMapper","type":"->"},{"file":"/srv/nextcloud/app/lib/public/BackgroundJob/Job.php","line":80,"function":"run","class":"OCA\\Libresign\\BackgroundJob\\UserDeleted","type":"->"},{"file":"/srv/nextcloud/app/lib/public/BackgroundJob/QueuedJob.php","line":57,"function":"start","class":"OCP\\BackgroundJob\\Job","type":"->"},{"file":"/srv/nextcloud/app/lib/public/BackgroundJob/QueuedJob.php","line":47,"function":"start","class":"OCP\\BackgroundJob\\QueuedJob","type":"->"},{"file":"/srv/nextcloud/app/cron.php","line":177,"function":"execute","class":"OCP\\BackgroundJob\\QueuedJob","type":"->"}],"File":"/srv/nextcloud/app/apps/libresign/lib/Db/FileMapper.php","Line":227,"message":"Error while running background job OCA\\Libresign\\BackgroundJob\\UserDeleted (id: 325, arguments: null)","exception":{},"CustomMessage":"Error while running background job OCA\\Libresign\\BackgroundJob\\UserDeleted (id: 325, arguments: null)"}}

[vitormattos]

Sounds that this log isn't related to described scenario.

[vitormattos]

I think that I didn't understood your scenario. Could you explain with more details?

[w1n5l0w]

I can try. But what exactly don't you understand?