Card attachments are not displayed in description, "null is not an object (evaluating 'this.$attachmentResolver.resolve')"

[desven]

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Describe the bug
Attachments to cards are not display inline the comments. Only a standard icon is displayed with an error "null is not an object (evaluating 'this.$attachmentResolver.resolve')".
However they can be viewed in the attachments section.

To Reproduce
Steps to reproduce the behavior:

1. create new card
2. click on Insert attachment in the description section
3. choose file to upload
4. file is attached but not displayed in description

Expected behavior
Preview of the attachment should be visible in the description.

Screenshots

Client details:

• OS: macOS 14
• Safari, Firefox
• Desktop

Server details

Operating system: Ubuntu 22.04

Web server: Apache 2.4.52

Database: MySQL 8.0.36

PHP version: 8.1.2

Nextcloud version: 28.0.3

Where did you install Nextcloud from: Download from Nextcloud

Signing status:

No errors have been found.

List of activated apps:

Enabled:
  - activity: 2.20.0
  - admin_audit: 1.18.0
  - approval: 1.2.0
  - bruteforcesettings: 2.8.0
  - cloud_federation_api: 1.11.0
  - comments: 1.18.0
  - contactsinteraction: 1.9.0
  - dashboard: 7.8.0
  - dav: 1.29.1
  - deck: 1.12.2
  - federatedfilesharing: 1.18.0
  - federation: 1.18.0
  - files: 2.0.0
  - files_external: 1.20.0
  - files_pdfviewer: 2.9.0
  - files_reminders: 1.1.0
  - files_sharing: 1.20.0
  - files_trashbin: 1.18.0
  - files_versions: 1.21.0
  - firstrunwizard: 2.17.0
  - forms: 4.1.1
  - fulltextsearch_elasticsearch: 28.0.1
  - groupfolders: 16.0.4
  - groupquota: 0.1.12
  - logreader: 2.13.0
  - lookup_server_connector: 1.16.0
  - notifications: 2.16.0
  - oauth2: 1.16.3
  - onlyoffice: 9.0.0
  - password_policy: 1.18.0
  - photos: 2.4.0
  - privacy: 1.12.0
  - provisioning_api: 1.18.0
  - recommendations: 2.0.0
  - related_resources: 1.3.0
  - serverinfo: 1.18.0
  - settings: 1.10.1
  - sharebymail: 1.18.0
  - support: 1.11.0
  - survey_client: 1.16.0
  - systemtags: 1.18.0
  - text: 3.9.1
  - theming: 2.3.0
  - twofactor_admin: 4.4.0
  - twofactor_backupcodes: 1.17.0
  - twofactor_nextcloud_notification: 3.9.0
  - twofactor_totp: 10.0.0-beta.2
  - updatenotification: 1.18.0
  - user_ldap: 1.19.0
  - user_status: 1.8.1
  - viewer: 2.2.0
  - weather_status: 1.8.0
  - workflowengine: 2.10.0

Nextcloud configuration:

{
    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "next.hgcloud.de"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "overwrite.cli.url": "https:\/\/next.hgcloud.de",
        "dbtype": "mysql",
        "version": "28.0.3.2",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "sendmail",
        "mail_sendmailmode": "smtp",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "ldapIgnoreNamingRules": false,
        "ldapProviderFactory": "\\OCA\\User_LDAP\\LDAPProviderFactory",
        "maintenance": false,
        "theme": "",
        "loglevel": 1,
        "enable_previews": true,
        "preview_max_x": 640,
        "preview_max_y": 640,
        "enabledPreviewProviders": [
            "OC\\Preview\\Movie",
            "OC\\Preview\\Image"
        ],
        "enable_movie_transcode": true,
        "twofactor_enforced": "true",
        "twofactor_enforced_groups": [],
        "twofactor_enforced_excluded_groups": [],
        "updater.release.channel": "stable",
        "trashbin_retention_obligation": "auto, 90",
        "ldapUserCleanupInterval": "60",
        "skeletondirectory": "",
        "default_phone_region": "\"DE\"",
        "defaultapp": "",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "maintenance_window_start": 1
    }
}

Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/...

I use LDAP to AD-server on this instance but the issue exists on another instance with build-in user management.

Logs

Nextcloud log (data/nextcloud.log)

NO new log entries come up, if I reproduce the issue.

Browser log

Insert your browser log here, this could for example include:

No errors are displayed in console or network browser log during upload.

[johanneskopf]

Same issue here, although the error message is different: "Cannot read properties of null (reading 'resolve')"

Client details:

• OS: Windows 10
• Chrome, Firefox
• Desktop

[mobamoba]

I've had this issue for months and reported it in a different thread. I noticed other Nextcloud apps had a similar issue so perhaps there's a similar solution? For example:

nextcloud/collectives#1096
nextcloud/text#5484

[gaje12]

I was able to make the attachment show in the description by disabling the Text App. It takes away the Text editor and you'll need to manually write in Markdown, But it is a viable workaround for now. It may help locate the issue.

[reox]

possibly a duplicate of #5448 ?

I thought that this happened to only old cards, as I saw that first on cards that are ~4 years old - but that is an issue with new cards as well. If I add an attachement for a brand-new card, I see the same error.

[mortee]

Pasting images doesn't work either, even though it works in Notes.

[Phils80]

Hi, just installed and testing, but it seems that picture preview attachment problem is affecting me too. It is a big problem for me as this functionality is essential for me. I confirm what @gaje12 has observed - disabling Text app is allowing to see picture, but is killing text editor, so rather not acceptable for longer. The only difference I see is description in my case: "cannot read properties of null (reading: 'resolve')":

Client details: self hosted on Ubuntu 22.04, snap package, NC 28.0.8

[gaje12]

This might be a shot in the dark but to help isolate if this is something outside of nextcloud, does anyone have a server with this working with the Text App on?

[Phils80]

Hi @gaje12 I've left this topic after observing this problem, and today I've checked after your post. It seems in my case attachments started to work. The only action taken since August - update to NC v. 29.0.8 from 27 and changing some local settings to avoid displaying default phone region warning, nothing more... So my server works with Text App on :).

[reox]

For me this is still an issue using NC 30.0.1 and Deck 1.14.1
I also have Text App (4.1.0) running.

[pemibo1986]

I experiance the same with Nextcloud 30.0.1 and Deck 1.14.1. I installed NC as a Snap package on an Ubuntu 24.04 Server

[Phils80]

My hapiness wasn't for long. Today I observed following situation:

1. When I'm choosing attachment via add link icon, preview works great -> this option allows to add only files stored in NC
2. When I'm choosing attachment via add attachment -> this option allows to add files that are external to NC (for example from local disk ) problem occures...

Do you have the same experience ? It seems problem is when you try to add local file as attachment...
There is a workaround -> when you add attachment by add attachment, choose add link, choose latest and you can choose your attachment, then choose show preview...