App makes server unstable?

[patzm]

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Steps to reproduce

1. Create the same server configuration
2. Navigate to the store page of the Client Push app
3. Click Download and enable

Expected behaviour

It installs like announced in the Readme:

notify_push/README.md

Line 42 in 8e8953c

- Install the `notify_push` app from the appstore

Actual behaviour

The app can't be installed with the warning

Error: This app cannot be enabled because it makes the server unstable

Server configuration

Web server: Apache/Nginx

Database: Maria 10.11

PHP version: 8.3.18

Nextcloud version: Nextcloud Hub 10 (31.0.2), hosted through Docker (https://github.com/crazy-max/docker-nextcloud/ specifically)

List of activated apps

Enabled:

• activity: 4.0.0
• admin_audit: 1.21.0
• app_api: 5.0.2
• calendar: 5.2.0
• circles: 31.0.0
• cloud_federation_api: 1.14.0
• comments: 1.21.0
• contacts: 7.0.4
• dav: 1.33.0
• deck: 1.15.0
• drawio: 3.0.4
• electronicsignatures: 3.0.4
• extract: 1.3.6
• federatedfilesharing: 1.21.0
• federation: 1.21.0
• files: 2.3.1
• files_downloadlimit: 4.0.0
• files_markdown: 2.4.1
• files_pdfviewer: 4.0.0
• files_reminders: 1.4.0
• files_sharing: 1.23.1
• files_trashbin: 1.21.0
• files_versions: 1.24.0
• files_zip: 2.1.0
• firstrunwizard: 4.0.0
• gpxpod: 7.0.4
• integration_google: 3.2.0
• integration_openproject: 2.8.1
• logreader: 4.0.0
• lookup_server_connector: 1.19.0
• mail: 4.3.1
• maps: 1.5.0
• nextcloud_announcements: 3.0.0
• notifications: 4.0.0
• oauth2: 1.19.1
• onlyoffice: 9.7.0
• password_policy: 3.0.0
• photos: 4.0.0-dev.1
• previewgenerator: 5.8.0
• privacy: 3.0.0
• profile: 1.0.0
• provisioning_api: 1.21.0
• recommendations: 4.0.0
• related_resources: 2.0.0
• serverinfo: 3.0.0
• settings: 1.14.0
• sharebymail: 1.21.0
• socialsharing_email: 3.3.0
• support: 3.0.0
• survey_client: 3.0.0
• suspicious_login: 9.0.1
• systemtags: 1.21.1
• tasks: 0.16.1
• text: 5.0.0
• theming: 2.6.1
• twofactor_backupcodes: 1.20.0
• twofactor_totp: 13.0.0-dev.0
• updatenotification: 1.21.0
• user_oidc: 7.0.0
• user_status: 1.11.0
• viewer: 4.0.0
• weather_status: 1.11.0
• webhook_listeners: 1.2.0
• whiteboard: 1.0.5
• workflowengine: 2.13.0
  Disabled:
• bruteforcesettings: 4.0.0 (installed 2.4.0)
• contactsinteraction: 1.12.0 (installed 1.7.0)
• dashboard: 7.11.0 (installed 7.0.0)
• encryption: 2.19.0
• files_accesscontrol: 2.0.0 (installed 2.0.0)
• files_external: 1.23.0 (installed 1.16.1)
• files_rightclick: 0.15.1 (installed 1.6.0)
• forms: 5.0.4 (installed 5.0.4)
• groupfolders: 19.0.4 (installed 19.0.4)
• notify_push: 1.0.0 (installed 1.0.0)
• spreed: 21.0.1 (installed 21.0.1)
• twofactor_nextcloud_notification: 5.0.0
• user_ldap: 1.22.0

Nextcloud configuration

{
"system": {
"datadirectory": "REMOVED SENSITIVE VALUE",
"tempdirectory": "/data/tmp",
"supportedDatabases": [
"sqlite",
"mysql",
"pgsql"
],
"logtimezone": "Europe/Berlin",
"logdateformat": "Y-m-d H:i:s",
"memcache.local": "\OC\Memcache\APCu",
"apps_paths": [
{
"path": "/var/www/apps",
"url": "/apps",
"writable": false
},
{
"path": "/data/userapps",
"url": "/userapps",
"writable": true
}
],
"default_locale": "de",
"default_phone_region": "DE",
"mail_smtpmode": "smtp",
"instanceid": "REMOVED SENSITIVE VALUE",
"passwordsalt": "REMOVED SENSITIVE VALUE",
"secret": "REMOVED SENSITIVE VALUE",
"trusted_domains": [
"REDACTED"
],
"trusted_proxies": "REMOVED SENSITIVE VALUE",
"dbtype": "mysql",
"version": "31.0.2.1",
"overwriteprotocol": "https",
"dbname": "REMOVED SENSITIVE VALUE",
"dbhost": "REMOVED SENSITIVE VALUE",
"dbport": "",
"dbtableprefix": "",
"mysql.utf8mb4": true,
"dbuser": "REMOVED SENSITIVE VALUE",
"dbpassword": "REMOVED SENSITIVE VALUE",
"installed": true,
"mail_from_address": "REMOVED SENSITIVE VALUE",
"mail_sendmailmode": "smtp",
"mail_domain": "REMOVED SENSITIVE VALUE",
"mail_smtpauthtype": "LOGIN",
"mail_smtphost": "REMOVED SENSITIVE VALUE",
"mail_smtpport": "465",
"debug": false,
"loglevel": 2,
"maintenance": false,
"app_install_overwrite": [
"occweb",
"drawio",
"extract",
"gpxpod",
"electronicsignatures",
"files_markdown",
"files_mindmap",
"socialsharing_email",
"maps",
"forms",
"files_rightclick",
"groupfolders",
"spreed"
],
"enable_previews": true,
"enabledPreviewProviders": [
"OC\Preview\Movie",
"OC\Preview\GIF",
"OC\Preview\JPEG",
"OC\Preview\MarkDown",
"OC\Preview\MP3",
"OC\Preview\PNG",
"OC\Preview\TXT",
"OC\Preview\XBitmap",
"OC\Preview\BMP",
"OC\Preview\OpenDocument",
"OC\Preview\Krita",
"OC\Preview\HEIC",
"OC\Preview\PDF",
"OC\Preview\MP4",
"OC\Preview\MKV",
"OC\Preview\AVI"
],
"theme": "",
"allow_local_remote_servers": true,
"overwrite.cli.url": "https://REDACTED",
"mail_smtpauth": 1,
"mail_smtpname": "REMOVED SENSITIVE VALUE",
"mail_smtppassword": "REMOVED SENSITIVE VALUE",
"mail_smtpsecure": "ssl",
"maintenance_window_start": 1
}
}

Browser

Browser name: Firefox

Browser version: 136

Operating system: Mac 15.3.2

[patzm]

After reading https://help.nextcloud.com/t/error-this-app-cannot-be-enabled-because-it-makes-the-server-unstable/187557/3 I tried with Google Chrome latest to no avail. Same error message.

[patzm]

Ok final thought: I am running NextCloud behind a traefik reverse proxy. Could this be related to nextcloud/server#45378 ?

[joshtrichards]

Please check your Nextcloud log + browser inspector Console and Network tabs for checks.

[patzm]

In the console I got

Blocked loading mixed active content “http://cloud.patz.app:8000/apps/files/”

I wonder why the port 8000 got there. Shouldn't all be proxied through https and port 443?

In the network tab similar error:

Response header:

HTTP/2 301 
content-type: text/html
date: Mon, 07 Apr 2025 08:44:11 GMT
location: http://cloud.patz.app:8000/apps/files/
referrer-policy: strict-origin
server: nginx
strict-transport-security: max-age=15768000; includeSubDomains
x-content-type-options: nosniff
x-download-options: noopen
x-frame-options: SAMEORIGIN
x-permitted-cross-domain-policies: none
x-robots-tag: noindex,nofollow
x-xss-protection: 1; mode=block
content-length: 162
X-Firefox-Spdy: h2

wdyt? Not sure if I should route port 8000 through my reverse proxy, or worst case even open the port.

[patzm]

I just reviewed the

  'trusted_proxies' =>
  array (
    0 => '172.0.0.0/8',
  ),

(it was wrong before, now correct)

and

  'overwritehost' => 'cloud.patz.app',
  'overwriteprotocol' => 'https',
  'overwrite.cli.url' => 'https://cloud.patz.app',

but it still doesn't work. I also found that this isn't only related to this app. So maybe we transfer the issue to the server repo? Or where is the overall admin interface for apps implemented?

[patzm]

Relevant issue on the server side: nextcloud/server#48040

[kesselb]

Likely fixed by nextcloud/server#52440 with 31.0.5.

[patzm]

I was able to upgrade to 31.0.6 (skipped 31.0.5) and it works 🎉.