CSS broken in firefox

[immae]

Steps to reproduce

1. Open cloud instance on firefox 57.0.3
2. login

Expected behaviour

Expecting to see the file list

Actual behaviour

The CSS is completely screwed.

The web console complains that he cannot parse "/index.php/css/core/5fe99a33a90920b07ba9e99bde4e824b-server.css?v=3b461525fc1dda6972a9b575d24e0703-0", and actually the file seems to be empty.

The same link seen on chromium is correctly populated with styles.
The same link downloaded with wget is also empty.

Server configuration

Operating system: Linux

Web server: Apache

Database: postgresql

PHP version: 7.1

Nextcloud version: 12.0.4.3

Updated from an older Nextcloud/ownCloud or fresh install:
Updated from nextcloud 12.0.3 (which was working correctly)

Where did you install Nextcloud from:
Packaged by the archlinux distribution

Signing status:

Signing status

No errors have been found.

List of activated apps:

App list

Enabled:
  - activity: 2.5.2
  - bookmarks: 0.10.1
  - calendar: 1.5.7
  - comments: 1.2.0
  - contacts: 2.0.1
  - dav: 1.3.0
  - deck: 0.1.4
  - federatedfilesharing: 1.2.0
  - federation: 1.2.0
  - files: 1.7.2
  - files_external: 1.3.0
  - files_markdown: 1.0.1
  - files_pdfviewer: 1.1.1
  - files_sharing: 1.4.0
  - files_texteditor: 2.4.1
  - files_trashbin: 1.2.0
  - files_versions: 1.5.0
  - files_videoplayer: 1.1.0
  - gallery: 17.0.0
  - gpxedit: 0.0.7
  - gpxpod: 2.1.4
  - keeweb: 0.4.0
  - logreader: 2.0.0
  - lookup_server_connector: 1.0.0
  - nextcloud_announcements: 1.1
  - notes: 2.3.2
  - notifications: 2.0.0
  - oauth2: 1.0.5
  - ocsms: 1.12.0
  - password_policy: 1.2.2
  - provisioning_api: 1.2.0
  - serverinfo: 1.2.0
  - sharebymail: 1.2.0
  - spreed: 2.0.1
  - survey_client: 1.0.0
  - systemtags: 1.2.0
  - tasks: 0.9.5
  - theming: 1.3.0
  - twofactor_backupcodes: 1.1.1
  - updatenotification: 1.2.0
  - user_ldap: 1.2.1
  - workflowengine: 1.2.0
Disabled:
  - admin_audit
  - encryption
  - firstrunwizard
  - user_external

Nextcloud configuration:

Config report

{
    "system": {
        "instanceid": "occ80acffb59",
        "datadirectory": "\/home\/immae\/.no_backup\/owncloud",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "pgsql",
        "version": "12.0.4.3",
        "dbname": "webapps",
        "dbhost": "localhost",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "maxZipInputSize": 0,
        "allowZipDownload": true,
        "forcessl": true,
        "theme": "",
        "maintenance": false,
        "trusted_domains": [
            "outils.immae.eu",
            "cloud.immae.eu"
        ],
        "secret": "***REMOVED SENSITIVE VALUE***",
        "appstoreenabled": false,
        "appstore.experimental.enabled": true,
        "loglevel": 0,
        "trashbin_retention_obligation": "auto",
        "htaccess.RewriteBase": "\/",
        "mail_smtpmode": "sendmail",
        "mail_from_address": "owncloud",
        "mail_domain": "immae.eu",
        "memcache.local": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "localhost",
            "port": 6379,
            "dbindex": 14
        },
        "overwrite.cli.url": "https:\/\/cloud.immae.eu",
        "ldapIgnoreNamingRules": false,
        "ldapProviderFactory": "\\OCA\\User_LDAP\\LDAPProviderFactory"
    }
}

Are you using external storage, if yes which one: No

Are you using encryption: Yes

Are you using an external user-backend, if yes which one: LDAP

Client configuration

Browser: Firefox (works correctly with Chromium)

Operating system: Linux

Logs

Web server error log

Web server error log

No error

Nextcloud log (data/nextcloud.log)

Nextcloud log

{"reqId":"5Lwjk5iAtELJ0EAz0k50","level":0,"time":"2018-01-16T23:56:38+00:00","remoteAddr":"X.X.X.X","user":"--","app":"cron","method":"GET","url":"\/cron.php","message":"Run OCA\\Activity\\BackgroundJob\\RemoteActivity job with ID 5880","userAgent":"Mozilla\/5.0 (X11; Linux x86_64; rv:57.0) Gecko\/20100101 Firefox\/57.0","version":"12.0.4.3"}
{"reqId":"5Lwjk5iAtELJ0EAz0k50","level":0,"time":"2018-01-16T23:56:38+00:00","remoteAddr":"X.X.X.X.","user":"--","app":"cron","method":"GET","url":"\/cron.php","message":"Finished OCA\\Activity\\BackgroundJob\\RemoteActivity job with ID 5880 in 0 seconds","userAgent":"Mozilla\/5.0 (X11; Linux x86_64; rv:57.0) Gecko\/20100101 Firefox\/57.0","version":"12.0.4.3"}

Browser log

Browser log

Content Security Policy: La directive « frame-src » est obsolète. Veuillez utiliser la directive « child-src » à la place.
Content Security Policy: Les paramètres de la page ont empêché le chargement d’une ressource à self (« script-src 'nonce-dWU1T1FyWkVGNW4rUXcvVC8ycFJNbDNJU0dkamwrRmx1YStHY1FNNWE5UT06MUkwRURkbzBmOC9PSVVlaWx4QWRlek92RHpNMzJxY0ozZVhUQjJRS0ErUT0=' 'unsafe-eval' »). Source: (function e(t,n,r){function s(o,u){if(!n....
files:1
JQMIGRATE: Migrate is installed, version 1.4.0
core.js:7:542
Erreur dans les liens source : request failed with status 404
URL de la ressource : https://cloud.immae.eu/core/vendor/core.js?v=3b461525fc1dda6972a9b575d24e0703-0
URL du lien source : purify.min.js.map
[En savoir plus]
window.controllers/Controllers est obsolète. Veuillez ne pas l’utiliser pour détecter l’agent utilisateur (UA).

network log all 200.

Cache cleared

[macau23]

Are you sure? It works for me on Firefox 57. Do you have any add-ons installed that might be causing this?

[immae]

I may, but I have no hint...
Note that it’s consistent: three computers have the problem with firefox, and they have distinct add-on settings. And wget also have the empty stylesheet, and it has no add-on...

[immae]

(Also, I’m not alone: https://help.nextcloud.com/t/css-not-working-after-login-reinstall-instance-from-existing-one/24284 but he has errors in his logs while I don’t )

[immae]

Ok, so I checked the (nextcloud) apps, and it turns out that there is a "Theming" app that is activated by default (I never used it as far as I remember). If I disable it, it works correctly, and if I enable it it’s broken again. I should probably open a distinct issue for that then

[Jerico815]

I got exactly the same issue.
After my root disk was filled up 100%, I extended my disk and reboot ubuntu. Then I got this css problem.

This command solved the problem for me too:
sudo -u www-data php /var/www/nextcloud/occ app:disable theming

I never used this app before. This app was installed by default.
Thank you for the help.

Version: Nextcloud 12.0.4
Tested with Chrome & Firefox . Same error. After fix both are ok. (Also no cache problem, because cache was cleared)

[fbrousse]

Fix for me as well ! thanks. (issue on chrome and nextcloud 15.0.5)

[linus-ha]

Interesting. I've got it working again on nextcloud 18.0.0 by activating the app "theming". I've accidentally disabled it.
sudo -u www-data php /var/www/nextcloud/occ app:enable theming

[Terrox]

I have this problem now. Not sure why, my CSS files are full of what looks like gzip encoded data. changing theming doesn't do anything.

[TobjasR]

I'm having same problem now, however only with one of my two custom URLs (cloud.mydomain.tld and mycloud.dyndns.tld).
Have already tried all suggested solutions – no effect.

[Guiraud]

Have the same issue :

Tryed occ app:enable theming
but it's enabled :
theming already enabled