The Basics
- Nextcloud Server version (e.g., 29.x.x):
34.0.1.2
- Operating system and version (e.g., Ubuntu 24.04):
Debian Trixie
- Web server and version (e.g, Apache 2.4.25):
nginx 1.26.3
- PHP version (e.g, 8.3):
8.4
- Is this the first time you’ve seen this error? (Yes / No):
no
- When did this problem seem to first start?
now
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
Bare Metal
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
No
Summary of the issue you are facing:
I’m currently trying to have Imaginary generate the previews. To do this, I started a Docker container via docker run -d --name=imaginary -p 9000:9000 --restart=always ghcr.io/nextcloud-releases/aio-imaginary:latest
The container is running; I can see it when I run docker ps -a.
Now I’m checking whether the requests are reaching the container using docker logs -f imaginary and starting the preview generation with occ preview:generate-all -vvv. I can see that previews are being created, but there’s no log for the container—it remains empty.
Using curl -O "http://127.0.0.1:9000/crop?width=500&height=400&url=https://raw.githubusercontent.com/h2non/imaginary/master/testdata/large.jpg" works fine and i can see the result with docker logs -f imaginary
Log entries
complete empty
Nextcloud
Nothing in Nextcloud logs
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!):
{
"system": {
"instanceid": "***REMOVED SENSITIVE VALUE***",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"serverid": 1,
"trusted_domains": [
"***REMOVED SENSITIVE VALUE***"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"version": "34.0.1.2",
"overwrite.cli.url": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"installed": true,
"default_language": "de",
"default_timezone": "Europe\/Berlin",
"memories.db.triggers.fcu": true,
"memories.exiftool": "\/var\/www\/nextcloud\/apps\/memories\/bin-ext\/exiftool-aarch64-glibc",
"memories.vod.path": "\/var\/www\/nextcloud\/apps\/memories\/bin-ext\/go-vod-aarch64",
"memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
"memories.vod.ffprobe": "\/usr\/bin\/ffprobe",
"memories.vod.disable": true,
"memories.video_default_quality": "-2",
"memories.vod.use_transpose": true,
"memories.vod.use_gop_size": true,
"memories.gis_type": 1,
"memories.index.mode": "3",
"memories.index.path.blacklist": "\\\/@(Recycle|eaDir|calibre)\\\/",
"memories.index.path": "\/Photos",
"enable_previews": true,
"enabledPreviewProviders": [
"OC\\Preview\\Imaginary",
"OC\\Preview\\MP3",
"OC\\Preview\\Movie"
],
"preview_imaginary_url": "http://127.0.0.1:9000",
"preview_max_x": 2048,
"preview_max_y": 2048,
"preview_max_scale_factor": 1,
"preview_max_filesize_image": 100,
"jpeg_quality": 60,
"default_phone_region": "DE",
"integrity.check.disabled": false,
"knowledgebaseenabled": false,
"mail_smtpmode": "smtp",
"mail_sendmailmode": "pipe",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpauth": true,
"mail_smtpport": "465",
"debug": false,
"overwriteprotocol": "https",
"activity_expire_days": 14,
"auth.bruteforce.protection.enabled": true,
"ratelimit.protection.enabled": true,
"trashbin_retention_obligation": "auto, 7",
"logfile": "\/var\/log\/nextcloud\/nextcloud.log",
"logtimezone": "Europe\/Berlin",
"loglevel": 2,
"log_rotate_size": 0,
"remember_login_cookie_lifetime": 1296000,
"session_lifetime": 86400,
"session_keepalive": true,
"auto_logout": true,
"profile.enabled": false,
"memcache.local": "\\OC\\Memcache\\APCu",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"port": 0,
"timeout": 1,
"password": "***REMOVED SENSITIVE VALUE***"
},
"twofactor_enforced": "true",
"twofactor_enforced_groups": [],
"twofactor_enforced_excluded_groups": [
"test"
],
"defaultapp": "files",
"forbidden_filename_characters": [
"<",
">",
":",
"\"",
"|",
"?",
"*",
"\\",
"\/"
],
"forbidden_filename_extensions": [
" ",
".",
".filepart",
".part"
],
"filesystem_check_changes": 0,
"maintenance_window_start": 1,
"maintenance": false,
"trusted_proxies": "***REMOVED SENSITIVE VALUE***",
"theme": "",
"cron_log": true,
"forbidden_filenames": [
".htaccess",
"Thumbs.db",
"thumbs.db"
],
"forbidden_filename_basenames": [
"con",
"prn",
"aux",
"nul",
"com0",
"com1",
"com2",
"com3",
"com4",
"com5",
"com6",
"com7",
"com8",
"com9",
"com\u00b9",
"com\u00b2",
"com\u00b3",
"lpt0",
"lpt1",
"lpt2",
"lpt3",
"lpt4",
"lpt5",
"lpt6",
"lpt7",
"lpt8",
"lpt9",
"lpt\u00b9",
"lpt\u00b2",
"lpt\u00b3"
],
"music.lastfm_api_key": "***REMOVED SENSITIVE VALUE***",
"mail_smtpsecure": "ssl",
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***"
}
}
Apps
The output of occ app:list (if possible).
Enabled:
- appstore: 1.0.0
- bruteforcesettings: 7.0.0
- calendar: 6.5.0
- cloud_federation_api: 1.18.0
- contacts: 8.7.3
- dav: 1.39.0
- federatedfilesharing: 1.24.0
- files: 2.6.0
- files_external: 1.26.0
- files_lock: 34.0.0
- files_pdfviewer: 7.0.0-dev.0
- files_sharing: 1.26.0
- files_trashbin: 1.24.0
- logreader: 7.0.0
- lookup_server_connector: 1.22.0
- memories: 8.1.0
- music: 3.1.0
- notifications: 7.0.0-dev.1
- notify_push: 1.3.3
- oauth2: 1.22.0
- office: 1.0.0
- password_policy: 6.0.0-dev.0
- photos: 7.0.0
- previewgenerator: 5.14.0
- profile: 1.3.0
- provisioning_api: 1.24.0
- richdocuments: 11.0.0
- richdocumentscode_arm64: 26.4.104
- serverinfo: 6.0.0
- settings: 1.17.0
- suspicious_login: 12.0.0-dev.0
- systemtags: 1.24.0
- text: 8.0.0
- theming: 2.9.0
- twofactor_backupcodes: 1.23.0
- twofactor_totp: 16.0.0
- updatenotification: 1.24.0
- user_migration: 10.4.0
- viewer: 7.0.0-dev.0
- workflowengine: 2.16.0
Disabled:
- activity: 7.0.0 (installed 4.0.0)
- admin_audit: 1.24.0 (installed 1.21.0)
- app_api: 34.0.0 (installed 5.0.2)
- circles: 34.0.0 (installed 32.0.0)
- comments: 1.24.0 (installed 1.21.0)
- contactsinteraction: 1.15.0 (installed 1.12.0)
- dashboard: 7.14.0 (installed 7.11.0)
- dav_push: 1.0.2 (installed 1.0.2)
- encryption: 2.22.0 (installed 2.19.0)
- federation: 1.24.0 (installed 1.21.0)
- files_downloadlimit: 5.2.0-dev.0 (installed 4.0.0)
- files_reminders: 1.7.0 (installed 1.4.0)
- files_versions: 1.27.0 (installed 1.24.0)
- firstrunwizard: 7.0.0-dev.0 (installed 4.0.0)
- mail: 5.10.7 (installed 5.10.7)
- nextcloud_announcements: 6.0.0 (installed 3.0.0)
- privacy: 6.0.0-dev.1 (installed 3.0.0)
- recommendations: 7.0.0 (installed 4.0.0)
- related_resources: 5.0.0-dev.0 (installed 4.0.0-dev.0)
- sharebymail: 1.24.0 (installed 1.21.0)
- support: 6.0.0 (installed 3.0.0)
- survey_client: 6.0.0-dev.0 (installed 5.0.0-dev.0)
- testing: 1.23.0
- theming_customcss: 1.20.0 (installed 1.20.0)
- twofactor_nextcloud_notification: 8.0.0
- user_ldap: 1.25.0
- user_status: 1.14.0 (installed 1.11.0)
- weather_status: 1.14.0 (installed 1.13.0)
- webhook_listeners: 1.6.0 (installed 1.5.0)
How to - Nextcloud community
The official Nextcloud installation method. Provides easy deployment and maintenance with most features included in this one Nextcloud instance.