Can't merge or edit grouped faces

[fpp3]

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Getting help

In order to help you as efficiently (and quickly!) as possible, please fill in as much of the below requested information as you can.

Before clicking submit: Please check if your query is already addressed via the following resources:

• Official documentation (searchable and regularly updated)
• How to topics and FAQs
• Forum search

(Utilizing these existing resources is typically faster. It also helps reduce the load on our generous volunteers while elevating the signal to noise ratio of the forums otherwise arising from the same queries being posted repeatedly).

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):
  • 33.0.0
• Operating system and version (e.g., Ubuntu 24.04):
  • Arch Linux
• Web server and version (e.g, Apache 2.4.25):
  • None
• Reverse proxy and version _(e.g. nginx 1.27.2)
  • None
• PHP version (e.g, 8.3):
  • 8.3.30
• Is this the first time you’ve seen this error? (Yes / No):
  • Yes
• When did this problem seem to first start?
  • After succesfully seeing grouped faces
• 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:

After letting Recognize succesfuly cluster faces from my uploaded photos (for the first time), I wanted to merge a few ones and rename them, but I’m not able to do so. Trying to do any of the operations results in a popup error that says “Failed to do …”. Something to note, on the Photos app, I can’t see grouped faces, it always shows “Failed to recover Face list”.

Note: imaginary is disabled as recommended.

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

1. With a clean recognize face database, manually do a classification task via ssh.

2. After doing the clasification, in memories, try to merge or modify any parameter from the grouped faces. This is applicable from the webpage or the android app

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.

{"reqId":"mBsfW3aWk7fGctGODVt0","level":3,"time":"2026-02-24T17:33:03+00:00","remoteAddr":"127.0.0.1","user":"fpp","app":"index","method":"POST","url":"/apps/memories/api/image/multipreview","scriptName":"/index.php","message":"Class \"OC\\Preview\\Storage\\Root\" not found","userAgent":"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36","version":"33.0.0.16","exception":{"Exception":"Error","Message":"Class \"OC\\Preview\\Storage\\Root\" not found","Code":0,"Trace":[{"file":"/var/www/html/custom_apps/memories/lib/UtilController.php","line":53,"function":"OCA\\Memories\\Controller\\{closure}","class":"OCA\\Memories\\Controller\\ImageController","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/AppFramework/App.php","line":210,"function":"callback","class":"OCP\\AppFramework\\Http\\Response@anonymous\u0000/var/www/html/custom_apps/memories/lib/UtilController.php:41$8e","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":321,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Memories\\Controller\\ImageController","multipreview",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"memories.image.multipreview"}]},{"file":"/var/www/html/lib/base.php","line":1155,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/apps/memories/api/image/multipreview"]},{"file":"/var/www/html/index.php","line":25,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/custom_apps/memories/lib/Controller/ImageController.php","Line":120,"message":"Class \"OC\\Preview\\Storage\\Root\" not found","exception":"{\"class\":\"Error\",\"message\":\"Class \\\"OC\\Preview\\Storage\\Root\\\" not found\",\"code\":0,\"file\":\"/var/www/html/custom_apps/memories/lib/Controller/ImageController.php:120\",\"trace\":\"#0 /var/www/html/custom_apps/memories/lib/UtilController.php(53): OCA\\Memories\\Controller\\ImageController->OCA\\Memories\\Controller\\{closure}(Object(OC\\AppFramework\\Http\\Output))\\n#1 /var/www/html/lib/private/AppFramework/App.php(210): OCP\\AppFramework\\Http\\Response@anonymous->callback(Object(OC\\AppFramework\\Http\\Output))\\n#2 /var/www/html/lib/private/Route/Router.php(321): OC\\AppFramework\\App::main('OCA\\\\Memories\\\\Co...', 'multipreview', Object(OC\\AppFramework\\DependencyInjection\\DIContainer), Array)\\n#3 /var/www/html/lib/base.php(1155): OC\\Route\\Router->match('/apps/memories/...')\\n#4 /var/www/html/index.php(25): OC::handleRequest()\\n#5 {main}\"}","CustomMessage":"Class \"OC\\Preview\\Storage\\Root\" not found"},"id":"699de0f1ea416"}

{"reqId":"2oKhRlfgETPsJtVTXlcW","level":3,"time":"2026-02-24T17:33:05+00:00","remoteAddr":"127.0.0.1","user":"fpp","app":"core","method":"GET","url":"/apps/memories/api/image/preview/29271?c=b42e05caf35032682be785b0d09cf158&x=512&y=512&a=1","scriptName":"/index.php","message":"Movie preview generation process failed, file=/fpp/files/Photos/Camera/VID_2024-03-01-12-19-35-235.mp4","userAgent":"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36","version":"33.0.0.16","data":{"app":"core"},"id":"699de0f1ea3d5"}

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.

FaceMergeModal.vue:118  PROPFIND https://nextcloud.fpp3.duckdns.org/remote.php/dav/recognize/fpp/faces/16/ 403 (Forbidden)
(anonymous) @ index.js:2
execute @ index.js:2
patchInline @ index.js:2
(anonymous) @ index.js:2
(anonymous) @ index.js:2
execute @ index.js:2
patchInline @ index.js:2
se @ index.js:2
(anonymous) @ index.js:2
(anonymous) @ index.js:2
(anonymous) @ index.js:2
(anonymous) @ index.js:2
getDirectoryContents @ index.js:2
clickFace @ FaceMergeModal.vue:118
await in clickFace
dn @ vue.runtime.esm.js:3033
n @ vue.runtime.esm.js:1832
dn @ vue.runtime.esm.js:3033
e.$emit @ vue.runtime.esm.js:3732
click @ FaceList.vue:143
dn @ vue.runtime.esm.js:3033
n @ vue.runtime.esm.js:1832
dn @ vue.runtime.esm.js:3033
e.$emit @ vue.runtime.esm.js:3732
click @ ClusterGrid.vue:160
click @ ClusterGrid.vue:1
dn @ vue.runtime.esm.js:3033
n @ vue.runtime.esm.js:1832
dn @ vue.runtime.esm.js:3033
e.$emit @ vue.runtime.esm.js:3732
click @ Cluster.vue:116
dn @ vue.runtime.esm.js:3033
n @ vue.runtime.esm.js:1832
Ds.a._wrapper @ vue.runtime.esm.js:7500
FaceMergeModal.vue:161 Error: Invalid response: 403 
    at qe (index.js:2:80655)
    at Xe (index.js:2:80895)
    at index.js:2:90179
    at async o.clickFace (FaceMergeModal.vue:119:1)
clickFace @ FaceMergeModal.vue:161
await in clickFace
dn @ vue.runtime.esm.js:3033
n @ vue.runtime.esm.js:1832
dn @ vue.runtime.esm.js:3033
e.$emit @ vue.runtime.esm.js:3732
click @ FaceList.vue:143
dn @ vue.runtime.esm.js:3033
n @ vue.runtime.esm.js:1832
dn @ vue.runtime.esm.js:3033
e.$emit @ vue.runtime.esm.js:3732
click @ ClusterGrid.vue:160
click @ ClusterGrid.vue:1
dn @ vue.runtime.esm.js:3033
n @ vue.runtime.esm.js:1832
dn @ vue.runtime.esm.js:3033
e.$emit @ vue.runtime.esm.js:3732
click @ Cluster.vue:116
dn @ vue.runtime.esm.js:3033
n @ vue.runtime.esm.js:1832
Ds.a._wrapper @ vue.runtime.esm.js:7500

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": {
        "one-click-instance": true,
        "one-click-instance.user-limit": 100,
        "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
            }
        ],
        "check_data_directory_permissions": false,
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "password": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "overwritehost": "nextcloud.fpp3.duckdns.org",
        "overwriteprotocol": "https",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "localhost",
            "nextcloud.fpp3.duckdns.org"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "pgsql",
        "version": "33.0.0.16",
        "overwrite.cli.url": "https:\/\/nextcloud.fpp3.duckdns.org\/",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "maintenance": false,
        "updatechecker": true,
        "updatedirectory": "\/nc-updater",
        "loglevel": 2,
        "app_install_overwrite": [
            "nextcloud-aio",
            "passwords",
            "memories",
            "maps"
        ],
        "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": [
            "OC\\Preview\\Image",
            "OC\\Preview\\MarkDown",
            "OC\\Preview\\MP3",
            "OC\\Preview\\TXT",
            "OC\\Preview\\OpenDocument",
            "OC\\Preview\\Movie",
            "OC\\Preview\\Krita",
            "OC\\Preview\\ImaginaryPDF",
            "OC\\Preview\\HEIC",
            "OC\\Preview\\TIFF"
        ],
        "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.link": "https:\/\/nextcloud.com\/all-in-one\/",
        "upgrade.cli-upgrade-link": "https:\/\/github.com\/nextcloud\/all-in-one\/discussions\/2726",
        "maintenance_window_start": 100,
        "allow_local_remote_servers": true,
        "davstorage.request_timeout": 3600,
        "documentation_url.server_logs": "https:\/\/github.com\/nextcloud\/all-in-one\/discussions\/5425",
        "htaccess.RewriteBase": "\/",
        "dbpersistent": false,
        "auth.bruteforce.protection.enabled": true,
        "ratelimit.protection.enabled": true,
        "files_external_allow_create_new_local": false,
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "preview_imaginary_url": "***REMOVED SENSITIVE VALUE***",
        "preview_imaginary_key": "***REMOVED SENSITIVE VALUE***",
        "config_preset": 2,
        "memories.db.triggers.fcu": true,
        "memories.exiftool": "\/var\/www\/html\/custom_apps\/memories\/bin-ext\/exiftool-amd64-musl",
        "memories.vod.path": "\/var\/www\/html\/custom_apps\/memories\/bin-ext\/go-vod-amd64",
        "memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
        "memories.vod.ffprobe": "\/usr\/bin\/ffprobe",
        "memories.gis_type": 2,
        "DOMAIN": "nextcloud.fpp3.duckdns.org",
        "AIO_VERSION": "v12.7.0"
    }
}

Apps

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

Enabled:
  - activity: 6.0.0-dev.0
  - admin_audit: 1.23.0
  - bruteforcesettings: 6.0.0-dev.0
  - calendar: 6.2.0
  - circles: 33.0.0
  - cloud_federation_api: 1.17.0
  - comments: 1.23.0
  - contacts: 8.3.3
  - contactsinteraction: 1.14.1
  - dashboard: 7.13.0
  - dav: 1.36.0
  - deck: 1.17.0
  - federatedfilesharing: 1.23.0
  - federation: 1.23.0
  - files: 2.5.0
  - files_3dmodelviewer: 0.0.16
  - files_downloadlimit: 5.1.0-dev.0
  - files_pdfviewer: 6.0.0-dev.0
  - files_reminders: 1.6.0
  - files_sharing: 1.25.2
  - files_trashbin: 1.23.0
  - files_versions: 1.26.0
  - firstrunwizard: 6.0.0-dev.0
  - guests: 4.6.0
  - logreader: 6.0.0
  - lookup_server_connector: 1.21.0
  - memories: 7.8.2
  - nextcloud-aio: 0.8.0
  - nextcloud_announcements: 5.0.0
  - notes: 4.13.0
  - notifications: 6.0.0
  - notify_push: 1.3.0
  - oauth2: 1.21.0
  - password_policy: 5.0.0-dev.0
  - passwords: 2025.12.21
  - photos: 6.0.0-dev.0
  - previewgenerator: 5.12.1
  - privacy: 5.0.0-dev.0
  - profile: 1.2.0
  - provisioning_api: 1.23.0
  - recognize: 11.0.1
  - recommendations: 6.0.0-dev.0
  - related_resources: 4.0.0-dev.0
  - richdocuments: 10.1.0
  - serverinfo: 5.0.0-dev.0
  - settings: 1.16.0
  - sharebymail: 1.23.0
  - support: 5.0.0
  - survey_client: 5.0.0-dev.0
  - systemtags: 1.23.0
  - tasks: 0.17.1
  - text: 7.0.0-dev.3
  - theming: 2.8.0
  - twofactor_backupcodes: 1.22.0
  - twofactor_totp: 15.0.0-dev.0
  - twofactor_webauthn: 2.6.0
  - updatenotification: 1.23.0
  - user_status: 1.13.0
  - viewer: 6.0.0-dev.0
  - weather_status: 1.13.0
  - webhook_listeners: 1.5.0
  - whiteboard: 1.5.6
  - workflowengine: 2.15.0
Disabled:
  - app_api: 33.0.0 (installed 33.0.0)
  - encryption: 2.21.0
  - files_external: 1.25.1
  - maps: 1.6.0 (installed 1.6.0)
  - suspicious_login: 11.0.0-dev.0
  - twofactor_nextcloud_notification: 7.0.0
  - user_ldap: 1.24.0

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.