# Nextcloud AIO Interface Slim Application Error

**URL:** <https://help.nextcloud.com/t/nextcloud-aio-interface-slim-application-error/239461>\
**Category:** 📦 Appliances (Docker, Snappy, VM, NCP, AIO)\
**Tags:** app\_api, postgresql, nc30, aio\
**Created:** [January 28, 2026, 10:09pm UTC](https://help.nextcloud.com/t/nextcloud-aio-interface-slim-application-error/239461 "2026-01-28T22:09:07Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Ed\_Silver](https://help.nextcloud.com/user_avatar/help.nextcloud.com/ed_silver/32/76668_2.png) [@Ed\_Silver](https://help.nextcloud.com/u/Ed_Silver)\
**Post date:** [January 28, 2026, 10:09pm UTC](https://help.nextcloud.com/t/nextcloud-aio-interface-slim-application-error/239461/1 "2026-01-28T22:09:08Z")

</div>

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>
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> 
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Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. ❤

## The Basics

- Nextcloud Server version _(e.g., 29.x.x)_:
  - **[`Nextcloud Hub 9`](https://nextcloud.com)` (30.0.13)`**

- Operating system and version _(e.g., Ubuntu 24.04)_:
  - `Debian 6.12.57-1~bpo12+1 (2025-11-17) x86_64`

- Is this the first time you’ve seen this error? (Yes / No):
  - `Yes`

- When did this problem seem to first start?
  - `Today`

- Installation method _(e.g. AlO, NCP, Bare Metal/Archive, etc.)_
  - `AIO`

- Are you using CloudfIare, mod\_security, or similar? _(Yes / No)_
  - `No`

### Summary of the issue you are facing:

When attempting to load the AIO interface on port 8080, I am shown a webpage that says only: “Slim Application Error // A website error has occurred. Sorry for the temporary inconvenience. // Go Back”. There is no further detail.

The main Nextcloud website on port 80 loads and is fully functional. I haven’t found any other errors. It has been a while since I have updated my containers, and I know that the master container has been out of date for ~ a couple of weeks. Since last accessing the AIO interface I have updated Debian packages, but have not touched the Nextcloud installation.

I have read [Slim Application Error in AIO Interface](https://help.nextcloud.com/t/slim-application-error-in-aio-interface/235776) and [Slim Application Error when accessing AIO](https://help.nextcloud.com/t/slim-application-error-when-accessing-aio/218902) but their issues seem to be different, and they have more information presented to them. Not sure how to proceed to debug further so any help is appreciated!

### Steps to replicate it (hint: details matter!):

1. Fail to update Nextcloud AIO containers, including master container

2. Wait for a couple of weeks to pass, and update other system packages.

3. Attempt to load Nextcloud AIO to update containers.

### Log entries

#### Nextcloud

Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the _Copy raw_ option from _Administration settings-\>Logging_ screen or from your `nextcloud.log` located in your data directory). Feel free to use a pastebin/gist service if necessary.

```auto
[no mention of "slim" anywhere within the log files, only:]

ConnectException cURL error 7: Failed to connect to nextcloud.edsilver.uk port 443 after 4 ms: Could not connect to server (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://nextcloud.edsilver.uk/hosting/discovery

```

#### Web Browser

If the problem is related to the Web interface, open your browser inspector _Console_ and _Network_ tabs while refreshing (reloading) and reproducing the problem. Provide any relevant output/errors here that appear.

```auto
GET
https://192.168.0.37:8080/containers
[HTTP/1.1 500 Internal Server Error 80ms]

GET
https://192.168.0.37:8080/favicon.ico
[HTTP/1.1 404 Not Found 82ms]

```

#### Web server / Reverse Proxy

The output of your Apache/nginx/system log in `/var/log/ ____ `:

```auto
not sure how to find this...

```

### Configuration

#### Nextcloud

The output of `occ config:list system` or similar is best, but, if not possible, the contents of your `config.php` file from `/path/to/nextcloud` is fine (make sure to remove any identifiable information!):

```auto
{
    "system": {
        "memcache.local": "\\OC\\Memcache\\APCu",
        "apps_paths": [
            {
                "path": "\/var\/www\/html\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/www\/html\/custom_apps",
                "url": "\/custom_apps",
                "writable": true
            }
        ],
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": " ***REMOVED SENSITIVE VALUE***",
            "password": " ***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "overwritehost": "nextcloud.edsilver.uk",
        "overwriteprotocol": "https",
        "passwordsalt": " ***REMOVED SENSITIVE VALUE***",
        "secret": " ***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "localhost",
            "nextcloud.edsilver.uk"
        ],
        "datadirectory": " ***REMOVED SENSITIVE VALUE***",
        "dbtype": "pgsql",
        "version": "30.0.13.1",
        "overwrite.cli.url": "https:\/\/nextcloud.edsilver.uk\/",
        "dbname": " ***REMOVED SENSITIVE VALUE***",
        "dbhost": " ***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "dbuser": " ***REMOVED SENSITIVE VALUE***",
        "dbpassword": " ***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": " ***REMOVED SENSITIVE VALUE***",
        "check_data_directory_permissions": false,
        "maintenance": false,
        "updater.release.channel": "stable",
        "updatedirectory": "\/nc-updater",
        "loglevel": "2",
        "log_type": "file",
        "logfile": "\/var\/www\/html\/data\/nextcloud.log",
        "log_rotate_size": "10485760",
        "log.condition": {
            "apps": [
                "admin_audit"
            ]
        },
        "preview_max_x": "2048",
        "preview_max_y": "2048",
        "jpeg_quality": "60",
        "enabledPreviewProviders": {
            "1": "OC\\Preview\\Image",
            "2": "OC\\Preview\\MarkDown",
            "3": "OC\\Preview\\MP3",
            "4": "OC\\Preview\\TXT",
            "5": "OC\\Preview\\OpenDocument",
            "6": "OC\\Preview\\Movie",
            "0": "OC\\Preview\\Imaginary",
            "23": "OC\\Preview\\ImaginaryPDF"
        },
        "enable_previews": true,
        "upgrade.disable-web": true,
        "mail_smtpmode": "smtp",
        "trashbin_retention_obligation": "auto, 30",
        "versions_retention_obligation": "auto, 30",
        "activity_expire_days": "30",
        "simpleSignUpLink.shown": false,
        "share_folder": "\/Shared",
        "one-click-instance": true,
        "one-click-instance.user-limit": 100,
        "one-click-instance.link": "https:\/\/nextcloud.com\/all-in-one\/",
        "htaccess.RewriteBase": "\/",
        "files_external_allow_create_new_local": false,
        "trusted_proxies": " ***REMOVED SENSITIVE VALUE***",
        "allow_local_remote_servers": true,
        "preview_imaginary_url": " ***REMOVED SENSITIVE VALUE***",
        "appsallowlist": false,
        "upgrade.cli-upgrade-link": "https:\/\/github.com\/nextcloud\/all-in-one\/discussions\/2726",
        "maintenance_window_start": 100,
        "davstorage.request_timeout": 3600,
        "dbpersistent": false,
        "auth.bruteforce.protection.enabled": true,
        "ratelimit.protection.enabled": true,
        "preview_imaginary_key": " ***REMOVED SENSITIVE VALUE***",
        "mail_from_address": " ***REMOVED SENSITIVE VALUE***",
        "mail_sendmailmode": "smtp",
        "mail_domain": " ***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": " ***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "587",
        "mail_smtpauth": 1,
        "mail_smtpname": " ***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": " ***REMOVED SENSITIVE VALUE***",
        "documentation_url.server_logs": "https:\/\/github.com\/nextcloud\/all-in-one\/discussions\/5425",
        "updatechecker": false,
        "DOMAIN": "nextcloud.edsilver.uk"
    }
}

```

#### Apps

The output of `occ app:list` (if possible).

```auto
Enabled:
  - activity: 3.0.0
  - admin_audit: 1.20.0
  - bruteforcesettings: 3.0.0
  - calendar: 5.3.6
  - camerarawpreviews: 0.8.7
  - circles: 30.0.0
  - cloud_federation_api: 1.13.0
  - comments: 1.20.1
  - contacts: 7.2.0
  - contactsinteraction: 1.11.0
  - dashboard: 7.10.0
  - dav: 1.31.1
  - deck: 1.14.5
  - federatedfilesharing: 1.20.0
  - federation: 1.20.0
  - files: 2.2.0
  - files_downloadlimit: 3.0.0
  - files_pdfviewer: 3.0.0
  - files_reminders: 1.3.0
  - files_sharing: 1.22.0
  - files_trashbin: 1.20.1
  - files_versions: 1.23.0
  - firstrunwizard: 3.0.0
  - logreader: 3.0.0
  - lookup_server_connector: 1.18.0
  - nextcloud-aio: 0.8.0
  - nextcloud_announcements: 2.0.0
  - notifications: 3.0.0
  - notify_push: 1.3.0
  - oauth2: 1.18.1
  - password_policy: 2.0.0
  - photos: 3.0.2
  - privacy: 2.0.0
  - provisioning_api: 1.20.0
  - recommendations: 3.0.0
  - related_resources: 1.5.0
  - richdocuments: 8.5.13
  - serverinfo: 2.0.0
  - settings: 1.13.0
  - sharebymail: 1.20.0
  - support: 2.0.0
  - survey_client: 2.0.0
  - systemtags: 1.20.0
  - tasks: 0.16.1
  - text: 4.1.0
  - theming: 2.6.0
  - twofactor_backupcodes: 1.19.0
  - twofactor_totp: 12.0.0-dev
  - updatenotification: 1.20.0
  - user_status: 1.10.0
  - viewer: 3.0.0
  - weather_status: 1.10.0
  - webhook_listeners: 1.1.0-dev
  - whiteboard: 1.5.4
  - workflowengine: 2.12.0
Disabled:
  - app_api: 4.0.6 (installed 4.0.6)
  - encryption: 2.18.0
  - files_external: 1.22.0
  - files_rightclick: 0.15.1 (installed 1.6.0)
  - suspicious_login: 8.0.0
  - twofactor_nextcloud_notification: 4.0.0
  - user_ldap: 1.21.0

federatedfilesharing: 1.20.0

federation: 1.20.0

files: 2.2.0

files_downloadlimit: 3.0.0

files_pdfviewer: 3.0.0

files_reminders: 1.3.0

files_sharing: 1.22.0

files_trashbin: 1.20.1

files_versions: 1.23.0

firstrunwizard: 3.0.0

logreader: 3.0.0

lookup_server_connector: 1.18.0

nextcloud-aio: 0.8.0

nextcloud_announcements: 2.0.0

notifications: 3.0.0

notify_push: 1.3.0

oauth2: 1.18.1

password_policy: 2.0.0

photos: 3.0.2

privacy: 2.0.0

provisioning_api: 1.20.0

recommendations: 3.0.0

related_resources: 1.5.0

richdocuments: 8.5.13

serverinfo: 2.0.0

settings: 1.13.0

sharebymail: 1.20.0

support: 2.0.0

survey_client: 2.0.0

systemtags: 1.20.0

tasks: 0.16.1

text: 4.1.0

theming: 2.6.0

twofactor_backupcodes: 1.19.0

twofactor_totp: 12.0.0-dev

updatenotification: 1.20.0

user_status: 1.10.0

viewer: 3.0.0

weather_status: 1.10.0

webhook_listeners: 1.1.0-dev

whiteboard: 1.5.4

workflowengine: 2.12.0
Disabled:

app_api: 4.0.6 (installed 4.0.6)

encryption: 2.18.0

files_external: 1.22.0

files_rightclick: 0.15.1 (installed 1.6.0)

suspicious_login: 8.0.0

twofactor_nextcloud_notification: 4.0.0

user_ldap: 1.21.0

```

### Tips for increasing the likelihood of a response

- Use the `preformatted text` formatting option in the editor for all log entries and configuration output.
- If screenshots are useful, feel free to include them.
  - If possible, also include key error output in text form so it can be searched for.

- Try to edit log output only minimally (if at all) so that it can be ran through analyzers / formatters by those trying to help you.

---

<div class="post-metadata">

**Author:** ![szaimen](https://help.nextcloud.com/user_avatar/help.nextcloud.com/szaimen/32/63019_2.png) [@szaimen](https://help.nextcloud.com/u/szaimen)\
**Post date:** [January 28, 2026, 10:09pm UTC](https://help.nextcloud.com/t/nextcloud-aio-interface-slim-application-error/239461/2 "2026-01-28T22:09:42Z")

</div>

Hi, can you please post the output of `sudo docker logs nextcloud-aio-mastercontainer` here?

---

<div class="post-metadata">

**Author:** ![Ed\_Silver](https://help.nextcloud.com/user_avatar/help.nextcloud.com/ed_silver/32/76668_2.png) [@Ed\_Silver](https://help.nextcloud.com/u/Ed_Silver)\
**Post date:** [January 30, 2026, 12:02am UTC](https://help.nextcloud.com/t/nextcloud-aio-interface-slim-application-error/239461/3 "2026-01-30T00:02:44Z")

</div>

Hi szaimen,

I can post the log in full if needed, but I’ve just found in it the following

```plaintext
Tips: To display error details in HTTP response set “displayErrorDetails” to true in the ErrorHandler constructor.
NOTICE: PHP message: Slim Application Error
Type: Exception
Code: 0
Message: Could not create the nextcloud-aio network: {“message”:“client version 1.41 is too old. Minimum supported API version is 1.44, please upgrade your client to a newer version”}
File: /var/www/docker-aio/php/src/Docker/DockerActionManager.php
Line: 916
Trace: #0 /var/www/docker-aio/php/src/Docker/DockerActionManager.php(946): AIO\Docker\DockerActionManager->ConnectContainerIdToNetwork(‘nextcloud-aio-m…’, ‘’)

```

which I presume is the root of the error!

I have seen on [Slim Application Error in AIO Interface](https://help.nextcloud.com/t/slim-application-error-in-aio-interface/235776) the command:  
`sudo docker exec nextcloud-aio-mastercontainer bash -lc “sed -i ‘s/1.41/1.44/g’ /var/www/docker-aio/php/src/Docker/DockerActionManager.php”`

is something like this suitable here? I am of course slightly wary of running random commands in case I bungle the installation further!

Thanks, Ed

---

<div class="post-metadata">

**Author:** ![szaimen](https://help.nextcloud.com/user_avatar/help.nextcloud.com/szaimen/32/63019_2.png) [@szaimen](https://help.nextcloud.com/u/szaimen)\
**Post date:** [January 30, 2026, 6:41am UTC](https://help.nextcloud.com/t/nextcloud-aio-interface-slim-application-error/239461/4 "2026-01-30T06:41:48Z")

</div>

Hi, see [GitHub - nextcloud/all-in-one: 📦 The official Nextcloud installation method. Provides easy deployment and maintenance with most features included in this one Nextcloud instance.](https://github.com/nextcloud/all-in-one?tab=readme-ov-file#how-to-adjust-the-internally-used-docker-api-version)

---

<div class="post-metadata">

**Author:** ![Ed\_Silver](https://help.nextcloud.com/user_avatar/help.nextcloud.com/ed_silver/32/76668_2.png) [@Ed\_Silver](https://help.nextcloud.com/u/Ed_Silver)\
**Post date:** [January 31, 2026, 12:34am UTC](https://help.nextcloud.com/t/nextcloud-aio-interface-slim-application-error/239461/5 "2026-01-31T00:34:28Z")

</div>

Running the following command to replace a single instance of the version number in DockerActionManager.php and restarting the mastercontainer docker allowed the web interface to run - and thus allowed me to update my containers. This saved me reconfiguring the docker from scratch!

`sudo docker exec nextcloud-aio-mastercontainer bash -lc “sed -i ‘s/1.41/1.44/g’ /var/www/docker-aio/php/src/Docker/DockerActionManager.php”`

Thanks for the help @szaimen

---

<div class="post-metadata">

**Author:** ![system](https://help.nextcloud.com/user_avatar/help.nextcloud.com/system/32/29333_2.png) [@system](https://help.nextcloud.com/u/system)\
**Post date:** [February 8, 2026, 12:35am UTC](https://help.nextcloud.com/t/nextcloud-aio-interface-slim-application-error/239461/6 "2026-02-08T00:35:20Z")

</div>

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