[Bug]: Imaginary doesn't generate previews for PDF

[enoch85]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

Been trying for a while now to generate previews for PDFs, using Imaginary. Nothing I've tried so far makes it work.

1. Installed Ghostscript in the docker, and on the host
2. Added OC\\Preview\\PDF to the config.php file (shouldn't be needed)
3. Pulled the latest imaginary docker image from AIO

Steps to reproduce

1. Install AIO docker with this script
2. Add PDFs to Nextcloud
3. Reload

Expected behavior

PDFs should generate a preview, but they aren't

Installation method

Community VM appliance

Nextcloud Server version

27

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.1

Web server

Apache (supported)

Database engine version

PostgreSQL

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

Upgraded to a MAJOR version (ex. 22 to 23)

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

{
    "system": {
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "localhost",
            "10.150.99.2",
            "cloud.whatever.nu",
            "office.whatever.nu"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "pgsql",
        "version": "27.1.1.0",
        "overwrite.cli.url": "https:\/\/cloud.whatever.nu\/",
        "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***",
        "upgrade.disable-web": true,
        "log_type": "file",
        "logfile": "\/var\/log\/nextcloud\/nextcloud.log",
        "loglevel": "2",
        "log.condition": {
            "apps": [
                "admin_audit"
            ]
        },
        "mail_smtpmode": "smtp",
        "remember_login_cookie_lifetime": "1800",
        "log_rotate_size": "10485760",
        "trashbin_retention_obligation": "auto, 60",
        "versions_retention_obligation": "auto, 180",
        "activity_expire_days": "120",
        "simpleSignUpLink.shown": false,
        "memcache.local": "\\OC\\Memcache\\Redis",
        "filelocking.enabled": true,
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0,
            "timeout": 0.5,
            "dbindex": 0,
            "password": "***REMOVED SENSITIVE VALUE***"
        },
        "default_phone_region": "se",
        "logtimezone": "Europe\/Stockholm",
        "htaccess.RewriteBase": "\/",
        "session_lifetime": "1800",
        "session_keepalive": "false",
        "maintenance": false,
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "forwarded_for_headers": [
            "HTTP_X_FORWARDED",
            "HTTP_FORWARDED_FOR"
        ],
        "overwriteprotocol": "https",
        "mail_smtpsecure": "ssl",
        "mail_sendmailmode": "smtp",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpauthtype": "LOGIN",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "465",
        "mail_smtpauth": 1,
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "preview_concurrency_new": "8",
        "preview_concurrency_all": "16",
        "enabledPreviewProviders": [
            "OC\\Preview\\Imaginary",
            "OC\\Preview\\Image",
            "OC\\Preview\\MarkDown",
            "OC\\Preview\\MP3",
            "OC\\Preview\\TXT",
            "OC\\Preview\\OpenDocument",
            "OC\\Preview\\Movie",
            "OC\\Preview\\Krita"
        ],
        "preview_imaginary_url": "http:\/\/127.0.0.1:9000",
        "preview_max_x": "2048",
        "preview_max_y": "2048",
        "jpeg_quality": "60",
        "preview_max_memory": "256"
    }
}

List of activated Apps

Enabled:
  - activity: 2.19.0
  - admin_audit: 1.17.0
  - bookmarks: 13.1.1
  - calendar: 4.5.1
  - cloud_federation_api: 1.10.0
  - comments: 1.17.0
  - contacts: 5.4.2
  - contactsinteraction: 1.8.0
  - dav: 1.27.0
  - extract: 1.3.6
  - federatedfilesharing: 1.17.0
  - federation: 1.17.0
  - files: 1.22.0
  - files_external: 1.19.0
  - files_fulltextsearch: 27.0.1
  - files_pdfviewer: 2.8.0
  - files_reminders: 1.0.0
  - files_rightclick: 1.6.0
  - files_sharing: 1.19.0
  - files_trashbin: 1.17.0
  - files_versions: 1.20.0
  - firstrunwizard: 2.16.0
  - fulltextsearch: 27.0.1
  - fulltextsearch_elasticsearch: 27.0.2
  - impersonate: 1.14.0
  - integration_google: 2.0.2
  - logreader: 2.12.0
  - lookup_server_connector: 1.15.0
  - maps: 1.1.1
  - notes: 4.8.1
  - notifications: 2.15.0
  - oauth2: 1.15.1
  - password_policy: 1.17.0
  - phonetrack: 0.7.6
  - photos: 2.3.0
  - privacy: 1.11.0
  - provisioning_api: 1.17.0
  - related_resources: 1.2.0
  - richdocuments: 8.2.0
  - serverinfo: 1.17.0
  - settings: 1.9.0
  - sharebymail: 1.17.0
  - spreed: 17.1.1
  - survey_client: 1.15.0
  - suspicious_login: 5.0.0
  - systemtags: 1.17.0
  - text: 3.8.0
  - theming: 2.2.0
  - twofactor_backupcodes: 1.16.0
  - updatenotification: 1.17.0
  - user_migration: 4.0.1
  - user_status: 1.7.0
  - viewer: 2.1.0
  - weather_status: 1.7.0
  - workflowengine: 2.9.0
Disabled:
  - bruteforcesettings: 2.7.0
  - circles: 27.0.1 (installed 23.0.0)
  - dashboard: 7.7.0 (installed 7.1.0)
  - encryption: 2.15.0
  - issuetemplate: 0.7.0 (installed 0.7.0)
  - nextcloud_announcements: 1.16.0 (installed 1.6.0)
  - recommendations: 1.6.0 (installed 0.4.0)
  - support: 1.10.0 (installed 1.0.0)
  - twofactor_reminder: 1.0.0 (installed 1.0.0)
  - twofactor_totp: 9.0.0
  - user_ldap: 1.17.0

Nextcloud Signing status

It's OK

Nextcloud Logs

No response

Additional info

cc @szaimen I can see that you install vips packages in the docker image so it should work out of the box, right?

[szaimen]

Yes, it should work out of the box

[enoch85]

OK, this is confirmed on at least 4 instances running 27.1.1. All with imaginary installed, but no Imagick.

[szaimen]

2. Added OC\\Preview\\PDF to the config.php file (shouldn't be needed)

If you remove that again does it make it work?

[solracsf]

'enabledPreviewProviders' =>
  array (
    0 => 'OC\\Preview\\Imaginary',
  ),
'preview_imaginary_url' => 'http://10.0.0.1:9000',

Works fine on my side, only Imaginary is a docker container on a remote host, not NC.

[solracsf]

Some debug if it helps (tested right now with 2 PDFs):

docker logs -f aio-imaginary

10.0.0.10 - - [27/Sep/2023 10:34:15] "POST /pipeline?operations=%5B%7B%22operation%22%3A%22convert%22%2C%22params%22%3A%7B%22type%22%3A%22png%22%7D%7D%2C%7B%22operation%22%3A%22fit%22%2C%22params%22%3A%7B%22width%22%3A1024%2C%22height%22%3A1024%2C%22stripmeta%22%3A%22true%22%2C%22type%22%3A%22png%22%2C%22norotation%22%3A%22true%22%2C%22quality%22%3A%2280%22%7D%7D%5D HTTP/1.1" 200 388833 0.4199
10.0.0.10 - - [27/Sep/2023 10:34:16] "POST /pipeline?operations=%5B%7B%22operation%22%3A%22convert%22%2C%22params%22%3A%7B%22type%22%3A%22png%22%7D%7D%2C%7B%22operation%22%3A%22fit%22%2C%22params%22%3A%7B%22width%22%3A1024%2C%22height%22%3A1024%2C%22stripmeta%22%3A%22true%22%2C%22type%22%3A%22png%22%2C%22norotation%22%3A%22true%22%2C%22quality%22%3A%2280%22%7D%7D%5D HTTP/1.1" 200 458698 0.4911

[small1]

I'll enable some logs on my imaginary instance and see what it says. It doesn't work for me.

[enoch85]

2. Added OC\\Preview\\PDF to the config.php file (shouldn't be needed)

If you remove that again does it make it work?

It's already removed, please check the first post.

@solracsf Strange. Running the AIO docker on the same host as Nextcloud. No imagick installed.

Do you have anything extra installed on your machine?

[solracsf]

No Imagick, no Ghostscript.
Check your container logs and make sure they comunicate.

[enoch85]

Screencast.from.2023-09-27.12.59.38.webm

@solracsf

[szaimen]

I just tested with an AIO test-instance that runs 27.1.1 and pdf preview generation using imaginary works fine over here.

[enoch85]

I just tested with an AIO test-instance that runs 27.1.1 and pdf preview generation using imaginary works fine over here.

Super odd, I will do a 100% fresh install, and test again.