Files and directories get numbers appended until filename is too long to sync

alexoz · December 4, 2025, 3:46pm

Nextcloud Server version (e.g., 29.x.x):
- 32.0.2
Operating system and version (e.g., Ubuntu 24.04):
- Debian 12
Web server and version (e.g, Apache 2.4.25):
- Apache 2.4.65
PHP version (e.g, 8.3):
- 8.2.29
Is this the first time you’ve seen this error? (Yes / No):
- yes
When did this problem seem to first start?
- yesterday after the last update
Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
- archive
Are you using CloudfIare, mod_security, or similar? (Yes / No)
- no

Summary of the issue you are facing:

Numbers get appended to directories and files until the filename is too long to sync.
Example:
Management (3) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2) (2)

It seems like the issue only affects shared files.

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

sync starts
it syncs
notifications pop up that file names are too long to sync

Log entries

Nextcloud

post is too big, but can provide

Configuration

Nextcloud

Summary

{
    "system": {
        "maintenance": false,
        "config_is_read_only": true,
        "version": "32.0.2.2",
        "maintenance_window_start": 0,
        "integrity.check.disabled": false,
        "appcodechecker": true,
        "updatechecker": true,
        "updater.release.channel": "stable",
        "auth.bruteforce.protection.enabled": true,
        "loglevel": 2,
        "logfile": "\/var\/log\/nextcloud\/nextcloud.log",
        "trusted_domains": [
            "***REMOVED SENSITIVE VALUE***"
        ],
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "overwrite.cli.url": "***REMOVED SENSITIVE VALUE***",
        "overwritehost": "***REMOVED SENSITIVE VALUE***",
        "overwriteprotocol": "https",
        "htaccess.RewriteBase": "\/",
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "filelocking.enabled": true,
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0
        },
        "allow_user_to_change_display_name": false,
        "remember_login_cookie_lifetime": 2592000,
        "session_keepalive": true,
        "defaultapp": "dashboard,files,calendar,forms,appointments",
        "default_language": "de",
        "default_locale": "de_AT",
        "default_phone_region": "AT",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "smtp",
        "mail_smtpsecure": "ssl",
        "mail_smtpauthtype": "LOGIN",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpauth": true,
        "mail_smtpport": "465",
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "***REMOVED SENSITIVE VALUE***",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "twofactor_enforced": "true",
        "twofactor_enforced_groups": [
            "Internal members"
        ],
        "twofactor_enforced_excluded_groups": [
            "Interns"
        ],
        "enable_previews": true,
        "enabledPreviewProviders": [
            "OC\\Preview\\Image"
        ],
        "preview_max_x": 16384,
        "preview_max_y": 16384,
        "preview_max_scale_factor": 5,
        "preview_max_filesize_image": 512,
        "preview_max_memory": 1024,
        "activity_expire_days": 1095,
        "trashbin_retention_obligation": "90, auto",
        "versions_retention_obligation": "auto",
        "sharing.maxAutocompleteResults": 5,
        "sharing.minSearchStringLength": 2,
        "sharing.enable_share_accept": true,
        "installed": true,
        "theme": "",
        "app_install_overwrite": {
            "0": "news",
            "1": "files_antivirus",
            "2": "workflow_pdf_converter",
            "3": "deck",
            "4": "end_to_end_encryption",
            "5": "external",
            "6": "files_accesscontrol",
            "7": "files_automatedtagging",
            "8": "flow_notifications",
            "9": "groupfolders",
            "10": "maps",
            "11": "recognize",
            "13": "spreed",
            "14": "text2image_helper",
            "15": "workflow_ocr"
        },
        "app.mail.background-sync-interval": 300,
        "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"
        ],
        "forbidden_filename_characters": [
            "<",
            ">",
            ":",
            "\"",
            "|",
            "?",
            "*",
            "\\",
            "\/"
        ],
        "forbidden_filename_extensions": [
            " ",
            ".",
            ".filepart",
            ".part"
        ],
        "updater.secret": "***REMOVED SENSITIVE VALUE***"
    }
}

Apps

Summary

Enabled:
  - activity: 5.0.0-dev.0
  - analytics: 6.0.1
  - announcementcenter: 7.2.2
  - approval: 2.6.0
  - assistant: 2.10.0
  - audioplayer: 3.7.0
  - auto_groups: 1.6.2
  - bookmarks: 16.0.1
  - bruteforcesettings: 5.0.0-dev.0
  - calendar: 6.1.1
  - camerarawpreviews: 0.8.8
  - checksum: 2.0.3
  - circles: 32.0.0
  - cloud_federation_api: 1.16.0
  - collectives: 3.4.0
  - comments: 1.22.0
  - contacts: 8.1.1
  - contactsinteraction: 1.13.1
  - dashboard: 7.12.0
  - dav: 1.34.2
  - deck: 1.16.2
  - drawio: 3.1.2
  - end_to_end_encryption: 1.18.0
  - event_update_notification: 2.7.0
  - external: 7.0.0
  - federatedfilesharing: 1.22.0
  - files: 2.4.0
  - files_accesscontrol: 3.0.2
  - files_antivirus: 6.1.0
  - files_automatedtagging: 3.0.1
  - files_downloadlimit: 5.0.0-dev.0
  - files_fulltextsearch: 32.0.2
  - files_linkeditor: 1.1.23
  - files_pdfviewer: 5.0.0-dev.0
  - files_reminders: 1.5.0
  - files_sharing: 1.24.1
  - files_trashbin: 1.22.0
  - files_versions: 1.25.0
  - firstrunwizard: 5.0.0-dev.0
  - flow_notifications: 3.0.0
  - forms: 5.2.3
  - geoblocker: 0.5.18
  - group_default_quota: 0.1.13
  - group_everyone: 0.1.18
  - groupfolders: 20.1.4
  - groupquota: 0.2.3
  - integration_giphy: 2.2.0
  - integration_openai: 3.9.1
  - integration_peertube: 2.1.0
  - intros: 1.2.1
  - logreader: 5.0.0-dev.0
  - lookup_server_connector: 1.20.0
  - maps: 1.6.0
  - memegen: 1.1.3
  - metadata: 0.23.0
  - news: 27.2.0
  - nextcloud_announcements: 4.0.0-dev.0
  - notes: 4.12.4
  - notifications: 5.0.0-dev.0
  - notify_push: 1.2.1
  - oauth2: 1.20.0
  - password_policy: 4.0.0-dev.0
  - photos: 5.0.0-dev.1
  - polls: 8.5.0
  - privacy: 4.0.0-dev.0
  - profile: 1.1.0
  - provisioning_api: 1.22.0
  - quota_warning: 1.22.0
  - recognize: 10.0.6
  - recommendations: 5.0.0-dev.0
  - related_resources: 3.0.0-dev.0
  - secrets: 2.1.4
  - serverinfo: 4.0.0-dev.0
  - settings: 1.15.1
  - sharebymail: 1.22.0
  - side_menu: 5.1.3
  - sketch_picker: 2.3.0
  - spreed: 22.0.4
  - suspicious_login: 10.0.0-dev.0
  - systemtags: 1.22.0
  - tasks: 0.17.1
  - text: 6.0.1
  - text2image_helper: 1.0.2
  - text_templates: 1.2.1
  - theming: 2.7.0
  - twofactor_admin: 4.9.0
  - twofactor_backupcodes: 1.21.0
  - twofactor_email: 2.8.3
  - twofactor_nextcloud_notification: 6.0.0-dev.0
  - twofactor_totp: 14.0.0
  - twofactor_webauthn: 2.4.1
  - updatenotification: 1.22.0
  - uppush: 2.3.1
  - user_retention: 1.15.0
  - user_status: 1.12.0
  - users_picker: 1.2.2
  - viewer: 5.0.0-dev.0
  - welcome: 1.3.0
  - workflow_ocr: 1.32.1
  - workflow_pdf_converter: 3.0.0
  - workflowengine: 2.14.0
Disabled:
  - admin_audit: 1.22.0
  - app_api: 32.0.0 (installed 32.0.0)
  - appointments: 2.6.2 (installed 2.6.2)
  - call_summary_bot: 3.1.0 (installed 3.1.0)
  - encryption: 2.20.0
  - federation: 1.22.0 (installed 1.22.0)
  - files_confidential: 3.3.0 (installed 3.3.0)
  - files_external: 1.24.0
  - impersonate: 3.0.0 (installed 3.0.0)
  - integration_youtube: 0.6.1 (installed 0.6.1)
  - ownershiptransfer: 1.3.0 (installed 1.3.0)
  - support: 4.0.0-dev.0 (installed 1.6.0)
  - survey_client: 4.0.0-dev.0 (installed 1.11.0)
  - terms_of_service: 4.6.1 (installed 4.6.1)
  - user_ldap: 1.23.0
  - weather_status: 1.12.0 (installed 1.3.0)
  - webhook_listeners: 1.3.0 (installed 1.3.0)

please help

alexoz · December 5, 2025, 1:52pm

the issue seems resolved for now and there is also a suspect: client-push (+ the talk desktop app maybe)

(approx) steps i took to resolve this:

reroute all traffic to a maintenance page to avoid interference
database backup (+ file backup)
update everything
clear all issues in the admin panel
disable some apps that aren’t mission critical (client_push for example)
manually remove all entries with numbers appended in the oc_share database table
manually remove all files with numbers appended in the accounts
set correct route to nextcloud again

After those steps it seemed like those files/directories were gone for good, so I decided to enable some apps again.

When the client-push app was enabled those files suddenly started to appear again!

alexoz · December 11, 2025, 9:56am

today those directories popped up again .. if anyone has any idea as to why, we would be very grateful!

Mornsgrans · December 11, 2025, 3:31pm

Only post the lines from log, when the error appeared (corresponding date and time)

narF · April 7, 2026, 3:25am

I have the same issue.

It only affects the few files that are shared to me from other local users. Those users are reporting that the filenames look normal on their side (without any “(2)” appended)

I tried a few things to reproduce the issue:

It’s not just files. Directories that are shared with me are also affected.
I asked another user to share a new file with me and that file got affected immediately (appended by “(2) (2) (2) (2) (2) (2) (2) (2)…”)
The files that I share to other users don’t seem to be affected. (These other users don’t see any “(2)” appended to filenames.)
Update: From my testing, the issue seems to come from the server. If I shut down all my client apps, the filenames still get appended with some (2) but at a much slower rate. It seems the server appends a (2) to the file name only when it access the list of files in the folder where the file is located.

I’m on Linux (Fedora). It affects both the AppImage and the Flatpak client.

Server: Nextcloud Hub 25 Autumn (32.0.8)

narF · April 8, 2026, 3:19pm

@alexoz Do you have special characters in your Nextcloud username? I had other issues with that in the past because my username contains @ and . characters (it’s my email address) and I wonder if this could be the cause too.

alexoz · April 9, 2026, 9:52am

@narF

finally someone with the same issue!

we don’t have any special characters in usernames, those are very simple in fact (e.g. alex)

narF · April 15, 2026, 4:30pm

@Mornsgrans What log would you need? How would I find that log?

Mornsgrans · April 15, 2026, 6:52pm

The Nextcloud log you will find after login with broswer in the admin settings - protocol.

narF · April 17, 2026, 7:08pm

Here’s the last 500 lines in my log: nextcloud-trimmed.log - narFCloud

Here’s the full log (33 MB) if you need it: nextcloud.log - narFCloud

Mornsgrans · April 17, 2026, 7:40pm

I found a loot of entries like

"Line":407,"message":"dirty table reads: SELECT `filecache`.`fileid`, `storage`, `path`, `path_hash`, `filecache`.`parent`, `filecache`.`name`, `mimetype`, `mimepart`, `size`, `mtime`, `storage_mtime`, `encrypted`, `filecache`.`etag`, `filecache`.`permissions`, `checksum`, `unencrypted_size`, `metadata_etag`, `creation_time`, `upload_time`, `meta`.`json` AS `meta_json`, `meta`.`sync_token` AS `meta_sync_token` FROM `*PREFIX*filecache` `filecache` LEFT JOIN `*PREFIX*filecache_extended` `fe` ON `filecache`.`fileid` = `fe`.`fileid` LEFT JOIN `*PREFIX*files_metadata` `meta` ON `filecache`.`fileid` = `meta`.`file_id` WHERE (`path_hash` = :dcValue1) AND (`storage` = :dcValue2)","tables":["oc_preferences","oc_login_address","oc_jobs","oc_filecache"],"reads":["oc_filecache","oc_filecache_extended","oc_files_metadata"],"exception":{},"CustomMessage":"dirty table reads: SELECT `filecache`.`fileid`, `storage`, `path`, `path_hash`, `filecache`.`parent`, `filecache`.`name`, `mimetype`, `mimepart`, `size`, `mtime`, `storage_mtime`, `encrypted`, `filecache`.`etag`, `filecache`.`permissions`, `checksum`, `unencrypted_size`, `metadata_etag`, `creation_time`, `upload_time`, `meta`.`json` AS `meta_json`, `meta`.`sync_token` AS `meta_sync_token` FROM `*PREFIX*filecache` `filecache` LEFT JOIN `*PREFIX*filecache_extended` `fe` ON `filecache`.`fileid` = `fe`.`fileid` LEFT JOIN `*PREFIX*files_metadata` `meta` ON `filecache`.`fileid` = `meta`.`file_id` WHERE (`path_hash` = :dcValue1) AND (`storage` = :dcValue2)"}}

My target was “dirty table reads:”. Do you get warnings and errors, after calling “Admin settings” after login with browser as admin?
Maybe a repair with occ-command is recommended.

I hope, that annother user, who is better involved in understanding the Nextcloud.log than me, will tell us his opnion.

narF · June 9, 2026, 2:57pm

The issue still occurs on Nextcloud Hub 25 Autumn (32.0.11) and client 33.0.2 (Linux AppImage) or client 33.0.5daily (Linux Flatpak)

The panel in Administration Settings > Overview only mentions that there are a lot of errors in the logs.

Here’s the full logs (100 MB) : nextcloud.log - narFCloud

From my testing, the issue seems to come from the server. If I shut down all my client apps, the files still get added some (2) but at a much slower rate. It seems the server appends a (2) to the file name only when it access the list of files in the folder where the file is located.

max-nextcloud · June 22, 2026, 11:30am

Hi,

the dirty table reads are typically debug log messages. You do not need to worry about those. Please make sure to set your log level to something other than debug.

Debug logging for everything is simply overwhelming and usually not helpful.

max-nextcloud · June 22, 2026, 11:38am

The error in the logs ist mostly:

“Error while trying to create shared mount”

Full trace

{
  "reqId": "RWmqTOrkGDAHjCOe9skh",
  "level": 3,
  "time": "2026-06-06T14:50:35-04:00",
  "app": "files_sharing",
  "method": "PROPFIND",
  "url": "/remote.php/dav/files/narF.snw@gmail.com/Apps",
  "scriptName": "/remote.php",
  "message": "Error while trying to create shared mount",
  "userAgent": "Mozilla/5.0 (Linux) mirall/33.0.2 (build 38494) (Nextcloud, fedora-7.0.9-105.fc43.x86_64 ClientArchitecture: x86_64 OsArchitecture: x86_64)",
  "version": "32.0.11.1",
  "clientReqId": "0a322d84-2e27-4c80-93a8-72acbf685981",
  "exception": {
    "Exception": "OC\\DB\\Exceptions\\DbalException",
    "Message": "An exception occurred while executing a query: SQLSTATE[22001]: String data, right truncated: 1406 Data too long for column 'file_target' at row 1",
    "Code": 1406,
    "Trace": [
      {
        "file": "/data/www/nextcloud283/lib/private/DB/ConnectionAdapter.php",
        "line": 69,
        "function": "wrap",
        "class": "OC\\DB\\Exceptions\\DbalException",
        "type": "::"
      },
      {
        "file": "/data/www/nextcloud283/lib/private/DB/QueryBuilder/QueryBuilder.php",
        "line": 310,
        "function": "executeStatement",
        "class": "OC\\DB\\ConnectionAdapter",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/lib/private/Share20/DefaultShareProvider.php",
        "line": 552,
        "function": "executeStatement",
        "class": "OC\\DB\\QueryBuilder\\QueryBuilder",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/lib/private/Share20/Manager.php",
        "line": 1247,
        "function": "move",
        "class": "OC\\Share20\\DefaultShareProvider",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/apps/files_sharing/lib/SharedMount.php",
        "line": 123,
        "function": "moveShare",
        "class": "OC\\Share20\\Manager",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/apps/files_sharing/lib/SharedMount.php",
        "line": 105,
        "function": "updateFileTarget",
        "class": "OCA\\Files_Sharing\\SharedMount",
        "type": "->",
        "args": [
          "*** sensitive parameters replaced ***"
        ]
      },
      {
        "file": "/data/www/nextcloud283/apps/files_sharing/lib/SharedMount.php",
        "line": 60,
        "function": "verifyMountPoint",
        "class": "OCA\\Files_Sharing\\SharedMount",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/apps/files_sharing/lib/MountProvider.php",
        "line": 94,
        "function": "__construct",
        "class": "OCA\\Files_Sharing\\SharedMount",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/lib/private/Files/Config/MountProviderCollection.php",
        "line": 56,
        "function": "getMountsForUser",
        "class": "OCA\\Files_Sharing\\MountProvider",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/lib/private/Files/Config/MountProviderCollection.php",
        "line": 68,
        "function": "getMountsFromProvider",
        "class": "OC\\Files\\Config\\MountProviderCollection",
        "type": "->"
      },
      {
        "function": "OC\\Files\\Config\\{closure}",
        "class": "OC\\Files\\Config\\MountProviderCollection",
        "type": "->",
        "args": [
          "*** sensitive parameters replaced ***"
        ]
      },
      {
        "file": "/data/www/nextcloud283/lib/private/Files/Config/MountProviderCollection.php",
        "line": 67,
        "function": "array_map"
      },
      {
        "file": "/data/www/nextcloud283/lib/private/Files/Config/MountProviderCollection.php",
        "line": 91,
        "function": "getUserMountsForProviders",
        "class": "OC\\Files\\Config\\MountProviderCollection",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/lib/private/Files/SetupManager.php",
        "line": 451,
        "function": "getUserMountsForProviderClasses",
        "class": "OC\\Files\\Config\\MountProviderCollection",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/lib/private/Files/Mount/Manager.php",
        "line": 117,
        "function": "setupForPath",
        "class": "OC\\Files\\SetupManager",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/lib/private/Files/View.php",
        "line": 1470,
        "function": "findIn",
        "class": "OC\\Files\\Mount\\Manager",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/lib/private/Files/View.php",
        "line": 1454,
        "function": "addSubMounts",
        "class": "OC\\Files\\View",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/apps/dav/lib/Connector/Sabre/Directory.php",
        "line": 199,
        "function": "getFileInfo",
        "class": "OC\\Files\\View",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/3rdparty/sabre/dav/lib/DAV/Tree.php",
        "line": 95,
        "function": "getChild",
        "class": "OCA\\DAV\\Connector\\Sabre\\Directory",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/3rdparty/sabre/dav/lib/DAV/Server.php",
        "line": 971,
        "function": "getNodeForPath",
        "class": "Sabre\\DAV\\Tree",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/3rdparty/sabre/dav/lib/DAV/Server.php",
        "line": 1664,
        "function": "getPropertiesIteratorForPath",
        "class": "Sabre\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/3rdparty/sabre/dav/lib/DAV/Server.php",
        "line": 1649,
        "function": "writeMultiStatus",
        "class": "Sabre\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/3rdparty/sabre/dav/lib/DAV/CorePlugin.php",
        "line": 346,
        "function": "generateMultiStatus",
        "class": "Sabre\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
        "line": 89,
        "function": "httpPropFind",
        "class": "Sabre\\DAV\\CorePlugin",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/3rdparty/sabre/dav/lib/DAV/Server.php",
        "line": 472,
        "function": "emit",
        "class": "Sabre\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/apps/dav/lib/Connector/Sabre/Server.php",
        "line": 212,
        "function": "invokeMethod",
        "class": "Sabre\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/data/www/nextcloud283/apps/dav/lib/Server.php",
        "line": 427,
        "function": "start",
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              "function": "writeMultiStatus",
              "class": "Sabre\\DAV\\Server",
              "type": "->"
            },
            {
              "file": "/data/www/nextcloud283/3rdparty/sabre/dav/lib/DAV/CorePlugin.php",
              "line": 346,
              "function": "generateMultiStatus",
              "class": "Sabre\\DAV\\Server",
              "type": "->"
            },
            {
              "file": "/data/www/nextcloud283/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
              "line": 89,
              "function": "httpPropFind",
              "class": "Sabre\\DAV\\CorePlugin",
              "type": "->"
            },
            {
              "file": "/data/www/nextcloud283/3rdparty/sabre/dav/lib/DAV/Server.php",
              "line": 472,
              "function": "emit",
              "class": "Sabre\\DAV\\Server",
              "type": "->"
            },
            {
              "file": "/data/www/nextcloud283/apps/dav/lib/Connector/Sabre/Server.php",
              "line": 212,
              "function": "invokeMethod",
              "class": "Sabre\\DAV\\Server",
              "type": "->"
            },
            {
              "file": "/data/www/nextcloud283/apps/dav/lib/Server.php",
              "line": 427,
              "function": "start",
              "class": "OCA\\DAV\\Connector\\Sabre\\Server",
              "type": "->"
            },
            {
              "file": "/data/www/nextcloud283/apps/dav/appinfo/v2/remote.php",
              "line": 22,
              "function": "exec",
              "class": "OCA\\DAV\\Server",
              "type": "->"
            },
            {
              "file": "/data/www/nextcloud283/remote.php",
              "line": 151,
              "args": [
                "/data/www/nextcloud283/apps/dav/appinfo/v2/remote.php"
              ],
              "function": "require_once"
            }
          ],
          "File": "/data/www/nextcloud283/3rdparty/doctrine/dbal/src/Driver/PDO/Statement.php",
          "Line": 130
        }
      }
    },
    "message": "Error while trying to create shared mount",
    "exception": {
      "query": "UPDATE `*PREFIX*share` SET `file_target` = :dcValue1 WHERE `id` = :dcValue2"
    },
    "CustomMessage": "Error while trying to create shared mount"
  }
}

I don’t see the collectives app anywhere in the trace. The trace seems very long and repetetive. I wonder if it’s a share loop. So you shared one file with someone who shared it back to you and that share lives inside the first share or so…

The appended numbers sound somewhat familiar. But I don’t remember what from. I’ll ask.

Looks like https://github.com/nextcloud/server/issues/57748 which was fixed with [stable33] fix: improve share mount conflict resolution logic by icewind1991 · Pull Request #57822 · nextcloud/server · GitHub .

narF · June 25, 2026, 2:54am

I do have the Collective app installed. I could try to upgrade to 33.0.5 and see if it solves my issue but I won’t have time to do this until next month.