.ncdata not found, it does exist

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The Basics

  • Nextcloud Server version (e.g., 29.x.x):
    • 32.0.1
  • Operating system and version (e.g., Ubuntu 24.04):
    • Linux 6.12.47+rpt-rpi-v8 aarch64
  • Web server and version (e.g, Apache 2.4.25):
    • apache2? tutorial said nginx - dont know how?
  • Reverse proxy and version _(e.g. nginx 1.27.2)
    • nginx? dont really know
  • PHP version (e.g, 8.3):
    • 8.3.27
  • Is this the first time you’ve seen this error? (Yes / No):
    • yes
  • When did this problem seem to first start?
    • after install
  • Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
    • bare metal -> docker
  • Are you using CloudfIare, mod_security, or similar? (Yes / No)
    • no

Summary of the issue you are facing:

[…] Cron Errors: Invalid data directory, ensure there is a file called .ncdata in the root of the data directory.

The file does exist, with the right filecontent and i did chown www-data:www-data on it, and also chmod 755.

docker exec -u www-data nextcloud-app-1 cat /var/www/html/data/.ncdata

Nextcloud data directory

→ www-data has access to .ncdata and the file exists

Steps to replicate it (hint: details matter!):

  1. https://www.youtube.com/watch?v=jT7CUK5UNrw install using this tutorial

  2. have data on external ssd

  3. ???

  4. No Profit?

Log entries

ExceptionHMAC does not match.
QueryNotFoundExceptionCould not resolve OCA\AppAPI\BackgroundJob\ExAppInitStatusCheckJob! Class “OCA\AppAPI\BackgroundJob\ExAppInitStatusCheckJob” does not exist

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.

https://pastebin.com/HMt8mcTs

Web Browser

If the problem is related to the Web interface, open your browser inspector Console and Network tabs while refreshing (reloading) and reproducing the problem. Provide any relevant output/errors here that appear.

PASTE

Web server / Reverse Proxy

The output of your Apache/nginx/system log in /var/log/____:

cant find it

Configuration

Nextcloud

The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):

PASTE HERE

image
image663Ă—914 175 KB

Apps

The output of occ app:list (if possible).

command not found, neither in container nor host

Tips for increasing the likelihood of a response

  • Use the preformatted text formatting option in the editor for all log entries and configuration output.
  • If screenshots are useful, feel free to include them.
    • If possible, also include key error output in text form so it can be searched for.
  • Try to edit log output only minimally (if at all) so that it can be ran through analyzers / formatters by those trying to help you.
2

also, how do i configure a maintenance window? i tried to do it in config.php and it broke everything

3

your troubleshooting step is very close to the right one but as your problem is related to cron you need

docker exec -u www-data nextcloud-cron-1 cat /var/www/html/data/.ncdata

or much easier with compose

docker compose exec -u www-data cron cat /var/www/html/data/.ncdata

please share the relevant configs - we don’t want to follow 10 different tutorial per day..

refers to

https://raw.githubusercontent.com/pimylifeup/compose/main/nextcloud/signed/compose.yaml

which in turn configures

  app:
    image: nextcloud:apache
..
    volumes:
      - ${STORAGE_LOCATION}:/var/www/html/data
      - nextcloud:/var/www/html
...

  cron:
    image: nextcloud:apache
..
    volumes:
      - nextcloud:/var/www/html:z
..

as you can see cron container doesn’t mount data directory, which is required (cron must have same mounts as app).

you can find advanced working compose at How to docker-compose with notify_push (2024)