[Bug]: jsresourceloader cannot load .mjs app assets in Nextcloud 35 — Euro-Office broken after upgrade

[iceweasel1]

⚠️ This issue respects the following points: ⚠️

• This is not a troubleshooting question, general support matter, or webserver/proxy problem, but likely a bug (if unsure, ask the Community Help Forum).
• This issue is not already reported on Github OR solved at the Community Help Forum (I've searched!).
• I'm using a maintained major version of Nextcloud Server and tested against the latest patch level. (Supported major versions and current patch levels).
• I agree to follow Nextcloud's Code of Conduct.
• I've tried my best to provide clear reproduction steps that someone unfamiliar with this bug could use to reproduce it.

Bug description

jsresourceloader cannot load .mjs app assets

Steps to reproduce

1. Upgrade Nextcloud to 35.0.0
2. Install Euro-Office 11.0.5 from nextcloud-releases/eurooffice
3. Enable the app with occ app:enable --force eurooffice
4. Try to open any document

Expected behavior

Document opens in Euro-Office editor

Nextcloud Server version

35

Operating system

Other

PHP engine version

PHP 8.4

Web server

Nginx

Database engine version

PostgreSQL

Is this bug present after an update or on a fresh install?

Upgraded to a MAJOR version (ex. 31 to 32)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

root@ec20bb222523:/# php /app/www/public/occ config:list system
{
    "system": {
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "10.10.2.50:8443",
            "MYDOMAIN"
        ],
        "dbtype": "pgsql",
        "version": "35.0.0.10",
        "overwrite.cli.url": "https:\/\/MYDOMAIN",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "maintenance": false,
        "default_phone_region": "DE",
        "memcache.local": "\\OC\\Memcache\\Redis",
        "filelocking.enabled": true,
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "upgrade.disable-web": true,
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "maintenance_window_start": "10",
        "overwriteprotocol": "https",
        "overwritehost": "MYDOMAIN",
        "forwarded_for_headers": [
            "HTTP_X_FORWARDED_FOR"
        ],
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "hsts": true,
        "twofactor_enforced": "true",
        "twofactor_enforced_groups": [],
        "twofactor_enforced_excluded_groups": [],
        "loglevel": 2,
        "allow_local_remote_servers": true,
        "simpleSignUpLink.shown": false,
        "app_install_overwrite": [
            "eurooffice"
        ]
    }
}
root@ec20bb222523:/#

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

{"app":"jsresourceloader","message":"Could not find resource eurooffice/js/eurooffice-settings.js to load"}

Additional info

• Linux (Docker / Unraid / linuxserver.io image)

[iceweasel1]

Workaround until this is fixed:

Install Euro-Office 11.0.5 from nextcloud-releases/eurooffice (full built package, not source):

wget https://github.com/nextcloud-releases/eurooffice/releases/download/v11.0.5/eurooffice-v11.0.5.tar.gz

Then create symlinks for .mjs files:

cd /nextcloud/apps/eurooffice/js/
for f in *.mjs; do ln -s "$f" "${f%.mjs}.js"; done

Then save settings in Admin → Nextcloud Office.

Note: This symlink step must be repeated after every Euro-Office update.