Backup seems to fail for community app

[rosano]

Not sure why this would be the case, other apps are fine.

2026-04-29T08:24:40.883Z taskworker: Starting task 16691. Logs are at /home/yellowtent/platformdata/logs/tasks/16691.log
2026-04-29T08:24:40.931Z taskworker: Running task of type appBackup
2026-04-29T08:24:40.958Z tasks: updating task 16691 with: {"percent":1,"message":"Backing up •••••.•••••.•••••.•••••. Waiting for lock"}
2026-04-29T08:24:40.982Z locks: write: current locks: {"app_backup_3c57c93b-7c67-40ad-bd65-27a18e073a68":"16691"}
2026-04-29T08:24:40.982Z locks: acquire: app_backup_3c57c93b-7c67-40ad-bd65-27a18e073a68
2026-04-29T08:24:40.983Z tasks: updating task 16691 with: {"message":"Snapshotting app •••••.•••••.•••••.•••••"}
2026-04-29T08:24:40.984Z tasks: setCompleted - 16691: {"result":null,"error":{"message":"Error creating config.json: EACCES: permission denied, open '/home/yellowtent/appsdata/3c57c93b-7c67-40ad-bd65-27a18e073a68/config.json'","reason":"FileSystem Error"},"percent":100}
2026-04-29T08:24:40.985Z tasks: updating task 16691 with: {"completed":true,"result":null,"error":{"message":"Error creating config.json: EACCES: permission denied, open '/home/yellowtent/appsdata/3c57c93b-7c67-40ad-bd65-27a18e073a68/config.json'","reason":"FileSystem Error"},"percent":100}
2026-04-29T08:24:40.992Z taskworker: Task took 0.112 seconds
BoxError: Error creating config.json: EACCES: permission denied, open '/home/yellowtent/appsdata/3c57c93b-7c67-40ad-bd65-27a18e073a68/config.json'
    at Object.writeConfig (file:///home/yellowtent/box/src/apps.js:1603:15)
    at snapshotApp (file:///home/yellowtent/box/src/backuptask.js:328:16)
    at uploadAppSnapshot (file:///home/yellowtent/box/src/backuptask.js:340:11)
    at backupAppWithTag (file:///home/yellowtent/box/src/backuptask.js:382:32)
    at backupApp (file:///home/yellowtent/box/src/backuptask.js:430:24)
    at process.processTicksAndRejections (node:internal/process/task_queues:103:5)
    at async appBackup (file:///home/yellowtent/box/src/backuptask.js:594:20)
2026-04-29T08:24:40.993Z Exiting with code 0

[james]

Hello @rosano
Depending on how the community app it is packaged it could be magnitude of things.
When we introduced community apps, we explicitly stated that we can not offer support for these.

Still, can you link the community app in question from https://forum.cloudron.io/topic/15172/community-apps?
Maybe there is something in the Dockerfile which I can identify that might cause this issue.

[rosano]

@james said:

Depending on how the community app it is packaged it could be magnitude of things.
When we introduced community apps, we explicitly stated that we can not offer support for these.

I'm not sure it has anything to do with the app. Seems like it's just a permissions issue on Cloudron? Two other installation of the same build (one via cloudron install and one via Community App) have no issue.

[james]

Hello @rosano
Can you compare the permissions for that file for the 3x apps?
/home/yellowtent/appsdata/3c57c93b-7c67-40ad-bd65-27a18e073a68/config.json is the failing one, so the other two app ids go into that path.

# get the permission for that file of the failing app
getfacl /home/yellowtent/appsdata/3c57c93b-7c67-40ad-bd65-27a18e073a68/config.json
# or use ls -lah for that file if getfacl is not present on your system

A normal output of getfacl looks like this:

getfacl /home/yellowtent/appsdata/1f7269d9-efb2-40db-b6b6-2dccb73d6d73/config.json
getfacl: Removing leading '/' from absolute path names
# file: home/yellowtent/appsdata/1f7269d9-efb2-40db-b6b6-2dccb73d6d73/config.json
# owner: yellowtent
# group: yellowtent
user::rw-
group::r--
other::r--

And the ls -lah output`:

ls -lah /home/yellowtent/appsdata/1f7269d9-efb2-40db-b6b6-2dccb73d6d73/config.json
-rw-r--r-- 1 yellowtent yellowtent 4.7K Nov  9 23:00 /home/yellowtent/appsdata/1f7269d9-efb2-40db-b6b6-2dccb73d6d73/config.json

[rosano]

@james I tried installing the app on a different name and the issue was still there, but now it's not for some reason. Will try what you suggest if it happens again and report back.