Nextcloud not working with matrix-docker-ansible-deploy and non-root nextcloud_path_prefix

[KlausHans]

Hello, i've configed mash with nextcloud. The playbook finishes without error but if i access the nextcloud url it looks wrong: The browser console throws errors, that indicate that assets are not found, e.g.:

GET
https://domain.de/core/css/server.css?v=ba222ded25d957b900c03bef914333cd

GET
    https://domain.de/core/css/server.css?v=ba222ded25d957b900c03bef914333cd
Status
404
Not Found
VersionHTTP/2
Übertragen175 B (0 B Größe)
Referrer Policyno-referrer

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    date
        Sat, 27 May 2023 11:44:27 GMT
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    Accept
        text/css,*/*;q=0.1
    Accept-Encoding
        gzip, deflate, br
    Accept-Language
        de,en-US;q=0.7,en;q=0.3
    Connection
        keep-alive
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        oc5w7620bgj3=12b1e895fc534e91251e5eab6cf45ea2
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        domain.de
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I am wondering why the url is https://domain.de/core/css/server.css... . Shouldn't it be https://domain.de/nextcloud/core/css/server.css...?

My Nextcloud config in vars.yml is

########################################################################
#                                                                      #
# nextcloud                                                            #
#                                                                      #
########################################################################

nextcloud_enabled: true

nextcloud_hostname: domain.de
nextcloud_path_prefix: /nextcloud

# Redis configuration, as described below

########################################################################
#                                                                      #
# /nextcloud                                                           #
#                                                                      #
########################################################################

I've substituted the real domain with "domain" everywhere here.

I use Traefik from the Matrix-Playbook and configured it accodingly in the mash vars:

mash_playbook_reverse_proxy_type: other-traefik-container
mash_playbook_reverse_proxyable_services_additional_network: traefik

Any idea whats wrong?

[KlausHans]

If i change nextcloud_path_prefix: /nextcloud to nextcloud_path_prefix: / and access it accordingly it works. But that is not what i want.

[KlausHans]

I came across this: https://github.com/nextcloud/docker/issues/401#issuecomment-1370294958 I wanted to try it, but i am stuck because docker exec --user www-data mash-nextcloud-server php occ maintenance:update:htaccess returns Could not open input file: /var/www/html/occ. How can i use occ in mash? Close to giving up mash... :(

[spantaleev]

Try docker exec --user $(id -u mash) mash-nextcloud-server php occ

[KlausHans]

Thanks, that worked.

I made the changes suggested in the linked issue, changed to nextcloud_path_prefix: /nextcloud again and rerun the Playbook. Now i get an internal server error. just run-tags adjust-nextcloud-config didn't helped. I saw that most of the steps from the linked issue are made here too. Before changing nextcloud_path_prefix: /nextcloud to nextcloud_path_prefix: / i wasn't able to perform just run-tags adjust-nextcloud-config, it threw errors (i think because nextcloud wasn't initialised yet. I couldn't initialise it in the broken state).

[spantaleev]

From what I remember, you're supposed to do the adjust-config thing only after going through the installation steps via the web UI.

This is also documented here: https://github.com/mother-of-all-self-hosting/mash-playbook/blob/main/docs/services/nextcloud.md#usage