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Getting help
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The Basics
- Nextcloud Server version (e.g., 29.x.x):
32.0.0
- Operating system and version (e.g., Ubuntu 24.04):
- Nextcloud docker official image
Summary of the issue you are facing:
After upgrading to V32.0.0 the app Team folders V19 did not run and could not be updated to V20.1.0 with the UI.
So I deleted the folder custom_apps/groupfolders and tried to install it with the CLI. The app is now installed but enabling it with UI or CLI results in the error
“json_decode(): Argument #1 ($json) must be of type string, null given”
Steps to replicate it (hint: details matter!)
Installing Team folders in a new Nectcloud instance works fine.
Log entries
[settings] Fehler: could not enable apps
POST /settings/apps/enable
von fdea:1d79:7d81:0:8d56:a085:1eb1:6dd4 von nc_admin um 30.09.2025, 16:32:02
Nextcloud
Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the Copy raw option from Administration settings->Logging screen or from your nextcloud.log located in your data directory). Feel free to use a pastebin/gist service if necessary.
[settings] Fehler: could not enable apps
POST /settings/apps/enable
von fdea:1d79:7d81:0:8d56:a085:1eb1:6dd4 von nc_admin um 30.09.2025, 16:32:02
{"reqId":"fkltwk4lWBrw0nzMDqBn","level":3,"time":"2025-09-30T16:32:02+02:00","remoteAddr":"fdea:1d79:7d81:0:8d56:a085:1eb1:6dd4","user":"nc_admin","app":"settings","method":"POST","url":"/settings/apps/enable","message":"could not enable apps","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36","version":"32.0.0.13","exception":{"Exception":"TypeError","Message":"json_decode(): Argument #1 ($json) must be of type string, null given","Code":0,"Trace":[{"file":"/var/www/html/custom_apps/groupfolders/lib/Folder/FolderManager.php","line":553,"function":"json_decode","args":[null,true]},{"file":"/var/www/html/custom_apps/groupfolders/lib/Folder/FolderManager.php","line":87,"function":"rowToFolder","class":"OCA\\GroupFolders\\Folder\\FolderManager","type":"->","args":[{"0":"And 2 more entries, set log level to debug to see all entries","folder_id":1,"mount_point":"Titiwu","quota":-4,"acl":1,"storage_id":2}]},{"file":"/var/www/html/custom_apps/groupfolders/lib/Migration/WrongDefaultQuotaRepairStep.php","line":32,"function":"getAllFolders","class":"OCA\\GroupFolders\\Folder\\FolderManager","type":"->","args":[]},{"file":"/var/www/html/lib/private/Repair.php","line":107,"function":"run","class":"OCA\\GroupFolders\\Migration\\WrongDefaultQuotaRepairStep","type":"->","args":[{"__class__":"OC\\Repair"}]},{"file":"/var/www/html/lib/private/legacy/OC_App.php","line":574,"function":"run","class":"OC\\Repair","type":"->","args":[]},{"file":"/var/www/html/lib/private/Installer.php","line":548,"function":"executeRepairSteps","class":"OC_App","type":"::","args":["groupfolders",{"step":"OCA\\GroupFolders\\Migration\\WrongDefaultQuotaRepairStep"}]},{"file":"/var/www/html/lib/private/Installer.php","line":93,"function":"installAppLastSteps","class":"OC\\Installer","type":"->","args":["/var/www/html/custom_apps/groupfolders",{"0":"And 22 more entries, set log level to debug to see all entries","id":"groupfolders","name":"Team folders","summary":"Admin configured folders shared with everyone in a team","description":"Admin configured folders shared with everyone in a team.\n\nFolders can be configured from *Team folders* in the admin settings.\n\nAfter a folder is created, the admin can give access to the folder to one or more teams, control their write/sharing permissions and assign a quota for the folder.\nAs of Hub 10/Nextcloud 31, the admin needs to be a part of the team to be able to assign it a Teamfolder.\n","version":"20.1.0"},null,"no"]},{"file":"/var/www/html/apps/settings/lib/Controller/AppSettingsController.php","line":574,"function":"installApp","class":"OC\\Installer","type":"->","args":["groupfolders"]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":204,"function":"enableApps","class":"OCA\\Settings\\Controller\\AppSettingsController","type":"->","args":[["groupfolders"],[]]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":118,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Settings\\Controller\\AppSettingsController"},"enableApps"]},{"file":"/var/www/html/lib/private/AppFramework/App.php","line":153,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Settings\\Controller\\AppSettingsController"},"enableApps"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":321,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Settings\\Controller\\AppSettingsController","enableApps",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"settings.appsettings.enableapps"}]},{"file":"/var/www/html/lib/base.php","line":1061,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/settings/apps/enable"]},{"file":"/var/www/html/index.php","line":25,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/custom_apps/groupfolders/lib/Folder/FolderManager.php","Line":553,"message":"could not enable apps","exception":[],"CustomMessage":"could not enable apps"},"id":"68dbeabc1ccd6"}
