Support intro
Sorry to hear you’re facing problems. 
The community help forum (help.nextcloud.com) is for home and non-enterprise users. Support is provided by other community members on a best effort / “as available” basis. All of those responding are volunteering their time to help you.
If you’re using Nextcloud in a business/critical setting, paid and SLA-based support services can be accessed via portal.nextcloud.com where Nextcloud engineers can help ensure your business keeps running smoothly.
Getting help
In order to help you as efficiently (and quickly!) as possible, please fill in as much of the below requested information as you can.
Before clicking submit: Please check if your query is already addressed via the following resources:
- Official documentation (searchable and regularly updated)
- How to topics and FAQs
- Forum search
(Utilizing these existing resources is typically faster. It also helps reduce the load on our generous volunteers while elevating the signal to noise ratio of the forums otherwise arising from the same queries being posted repeatedly).
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. 
The Basics
- Nextcloud Server version (e.g., 29.x.x):
35.0.0
- Operating system and version (e.g., Ubuntu 24.04):
docker aio
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
aio
Summary of the issue you are facing:
when trying to update containers to latest version i get this error in the log
please assist. i do not know where the folder is
System config value updatedirectory set to string /nc-updater
Config value were not updated
System config value update_channel set to string stable
Nextcloud Updater - version: v34.0.0rc2-18-gb96f9cc
Current version is 35.0.0.
Update to Nextcloud 35.0.2 available. (channel: “stable”)
Following file will be downloaded automatically: https://github.com/nextcloud-releases/server/releases/download/v35.0.2/nextcloud-35.0.2.zip
Open changelog 
Updater run in non-interactive mode.
Start update
Info: Pressing Ctrl-C will finish the currently running step and then stops the updater.
Check for expected files … K;41m[✘] Check for expected files failed;49m
;41mUnknown files detected within the installation folder. This can be fixed by manually removing (or moving) these files. The following extra files have been found:;49m
;41m core.8;49m
;41m core.7;49m
;41mUpdate failed. To resume or retry just execute the updater again.;49m
SveCloud 35.0.0
Nextcloud Updater - version: v34.0.0rc2-18-gb96f9cc
Current version is 35.0.0.
Update to Nextcloud 35.0.2 available. (channel: “stable”)
Following file will be downloaded automatically: https://github.com/nextcloud-releases/server/releases/download/v35.0.2/nextcloud-35.0.2.zip
Open changelog
Updater run in non-interactive mode.
Start update
Info: Pressing Ctrl-C will finish the currently running step and then stops the updater.
Check for expected files … K;41m[✘] Check for expected files failed;49m
;41mUnknown files detected within the installation folder. This can be fixed by manually removing (or moving) these files. The following extra files have been found:;49m
;41m core.8;49m
;41m core.7;49m
;41mUpdate failed. To resume or retry just execute the updater again.;49m
SveCloud 35.0.0
System config value updatechecker set to boolean true
nextcloud-aio already enabled
Done.
Done.
All tables already up to date!
Automatically reloading the page after 10s.