Permission error when trying to put nextcloud in maintenance mode.

[gaining]

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When running php occ maintenance:mode --on I get error Cannot write into "config" directory! This can usually be fixed by giving the webserver write access to the config directory

Expected Behavior

Should be able to put nextcloud in maintenance mode

Current Behavior

Unable to put nextcloud in maintenance mode.

It shows that I have user "911" I don't know why. This user isn't in my system's user list.

Steps to Reproduce

1.Type php occ maintenance:mode --on and wait for the error to show
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Environment

Linux SERVER 4.4.184-1220-rockchip-ayufan-g5fe46b4c9a4a #1 SMP Sun Jul 7 13:45:25 UTC 2019 aarch64 GNU/Linux
How docker service was installed:
via apt

Command used to create docker container (run/create/compose/screenshot)

Docker logs

[github-actions]

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[j0nnymoe]

use just occ as it's setup to be an alias. For example: occ maintenance:mode --on