[Bug]: ObjectStorePreviewStorage returns size 0 with OpenStack Swift, causing “Unable to write preview file”

[gloewl]

⚠️ This issue respects the following points: ⚠️

• This is not a troubleshooting question, general support matter, or webserver/proxy problem, but likely a bug (if unsure, ask the Community Help Forum).
• This issue is not already reported on Github OR solved at the Community Help Forum (I've searched!).
• I'm using a maintained major version of Nextcloud Server and tested against the latest patch level. (Supported major versions and current patch levels).
• I agree to follow Nextcloud's Code of Conduct.
• I've tried my best to provide clear reproduction steps that someone unfamiliar with this bug could use to reproduce it.

Bug description

Environment:

• Nextcloud 34.0.3
• Primary object storage: OpenStack Swift
• Preview storage: ObjectStorePreviewStorage

Symptom:

• Preview generation uploads the generated image to Swift, but subsequently throws: RuntimeException: Unable to write preview file
• The preview is not registered in oc_previews, so Nextcloud retries generation repeatedly.

Steps to reproduce

** Root cause:**
ObjectStorePreviewStorage::writePreview() wraps the preview stream using CountWrapper. The callback that updates $size is only invoked when the wrapper stream is closed.
The Swift writeObject() implementation consumes the supplied stream but does not close it. Therefore $size is still zero when writePreview() returns, even though the object upload succeeded.

Affected source:
https://github.com/nextcloud/server/blob/stable34/lib/private/Preview/Storage/ObjectStorePreviewStorage.php

Working fix:

try {
    $store->writeObject($urn, $countStream);
} catch (\Exception $exception) {
    throw new NotPermittedException(
        'Unable to save preview to object store',
        previous: $exception
    );
} finally {
    if (is_resource($countStream)) {
        fclose($countStream);
    }
}

return $size;

Closing the wrapper triggers the CountWrapper callback before $size is returned. The finally block also ensures that the stream is closed when the object-store implementation throws an exception.

Verification:

The previously failing occ preview:generate command succeeds.
A corresponding row is inserted into oc_previews.
Repeated preview generation succeeds.
No further “Unable to write preview file” errors occur.

Expected behavior

The preview is registered in oc_previews, so Nextcloud does not retriy generation repeatedly.

Nextcloud Server version

34

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.5

Web server

Apache (supported)

Database engine version

MariaDB

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

Updated from a MINOR version (ex. 32.0.1 to 32.0.2)

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": {
        "serverid": 1,
        "maintenance_window_start": 1,
        "htaccess.RewriteBase": "\/",
        "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
            }
        ],
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "password": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "objectstore": {
            "class": "OC\\Files\\ObjectStore\\Swift",
            "arguments": {
                "autocreate": true,
                "user": {
                    "name": "***REMOVED SENSITIVE VALUE***",
                    "password": "***REMOVED SENSITIVE VALUE***",
                    "domain": {
                        "name": "Default"
                    }
                },
                "scope": {
                    "project": {
                        "name": "PCP-W7GRJFG",
                        "domain": {
                            "name": "Default"
                        }
                    }
                },
                "serviceName": "swift",
                "region": "dc3-a",
                "url": "https:\/\/api.pub1.infomaniak.cloud\/identity\/v3",
                "bucket": "nextcloud"
            }
        },
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "overwritehost": "nc.gegesloewl.com",
        "overwriteprotocol": "https",
        "default_phone_region": "CH",
        "upgrade.disable-web": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "nc.gegesloewl.com",
            "188.213.128.96"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "34.0.3.2",
        "overwrite.cli.url": "https:\/\/nc.gegesloewl.com",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "loglevel": 3,
        "maintainance": {
            "true": ""
        },
        "maintainance:mode": {
            "on": ""
        },
        "maintenance": false,
        "updater.release.channel": "stable",
        "theme": "",
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "smtp",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "465",
        "mail_smtpauth": 1,
        "mail_smtpname": "***REMOVED SENSITIVE VALUE***",
        "mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpsecure": "ssl",
        "twofactor_enforced": "true",
        "twofactor_enforced_groups": [],
        "twofactor_enforced_excluded_groups": [
            "admin",
            "user"
        ],
        "app_install_overwrite": [],
        "log_rotate_size": 52428800
    },
    "apps": {
        "activity": {
            "enabled": "yes",
            "installed_version": "7.0.0",
            "types": "filesystem"
        },
        "app_api": {
            "enabled": "no",
            "installed_version": "34.0.0",
            "types": ""
        },
        "appstore": {
            "enabled": "yes",
            "installed_version": "1.0.0",
            "types": ""
        },
        "backgroundjob": {
            "lastjob": "119239589184413697"
        },
        "bruteForce": {
            "whitelist_1": "84.226.90.114\/1",
            "whitelist_2": "172.25.0.1\/1"
        },
        "bruteforcesettings": {
            "enabled": "yes",
            "installed_version": "7.0.0",
            "types": ""
        },
        "calendar": {
            "enabled": "yes",
            "installed_version": "6.5.4",
            "types": ""
        },
        "circles": {
            "enabled": "yes",
            "installed_version": "34.0.0",
            "loopback_tmp_scheme": "https",
            "maintenance_run": "0",
            "maintenance_update": "{\"3\":1788089418,\"2\":1788090017,\"1\":1788090317}",
            "migration_22": "1",
            "migration_run": "0",
            "types": "filesystem,dav",
            "remove_share_tokens_done": true
        },
        "cloud_federation_api": {
            "enabled": "yes",
            "installed_version": "1.18.0",
            "types": "filesystem"
        },
        "comments": {
            "enabled": "yes",
            "installed_version": "1.24.0",
            "types": "logging"
        },
        "contacts": {
            "enabled": "yes",
            "installed_version": "8.7.7",
            "types": "dav"
        },
        "contactsinteraction": {
            "enabled": "yes",
            "installed_version": "1.15.0",
            "types": "dav"
        },
        "core": {
            "backgroundjobs_mode": "cron",
            "emailTestSuccessful": "1",
            "group.sortBy": "2",
            "installedat": "1734011243.7557",
            "lastcron": 1788090317,
            "lastupdateResult": "[]",
            "lastupdatedat": 1788086556,
            "metadataGenerationDone": true,
            "moveavatarsdone": "yes",
            "previewMovedDone": true,
            "previewsCleanedUp": "1",
            "public_files": "files_sharing\/public.php",
            "vendor": "nextcloud",
            "files_metadata": {
                "photos-original_date_time": {
                    "value": null,
                    "type": "int",
                    "etag": "",
                    "indexed": true,
                    "editPermission": 0
                },
                "photos-size": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-exif": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "photos-ifd0": {
                    "value": null,
                    "type": "array",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 0
                },
                "blurhash": {
                    "value": null,
                    "type": "string",
                    "etag": "699c829418bb5",
                    "indexed": false,
                    "editPermission": 0
                },
                "files-live-photo": {
                    "value": null,
                    "type": "string",
                    "etag": "",
                    "indexed": false,
                    "editPermission": 2
                }
            },
            "oc.integritycheck.checker": []
        },
        "dashboard": {
            "enabled": "yes",
            "installed_version": "7.14.0",
            "types": ""
        },
        "dav": {
            "buildCalendarReminderIndex": "yes",
            "buildCalendarSearchIndex": "yes",
            "builtSocialSearchIndex": "yes",
            "checked_for_classified_activity": true,
            "chunks_migrated": "1",
            "enabled": "yes",
            "generateBirthdayCalendar": "no",
            "installed_version": "1.40.0",
            "regeneratedBirthdayCalendarsForYearFix": "yes",
            "types": "filesystem"
        },
        "federatedfilesharing": {
            "enabled": "yes",
            "installed_version": "1.24.0",
            "types": ""
        },
        "federation": {
            "enabled": "yes",
            "installed_version": "1.24.0",
            "types": "authentication"
        },
        "files": {
            "default_quota": "60 GB",
            "enabled": "yes",
            "installed_version": "2.6.0",
            "mimetype_version": "33.0.0.16",
            "types": "filesystem"
        },
        "files_downloadlimit": {
            "enabled": "yes",
            "installed_version": "5.2.0",
            "types": ""
        },
        "files_lock": {
            "enabled": "yes",
            "installed_version": "34.0.1",
            "types": "filesystem,dav"
        },
        "files_mindmap": {
            "enabled": "no",
            "installed_version": "0.0.33",
            "types": ""
        },
        "files_pdfviewer": {
            "enabled": "yes",
            "installed_version": "7.0.0-dev.0",
            "types": ""
        },
        "files_reminders": {
            "enabled": "yes",
            "installed_version": "1.7.0",
            "types": ""
        },
        "files_sharing": {
            "enabled": "yes",
            "installed_version": "1.26.0",
            "outgoing_server2server_group_share_enabled": "yes",
            "types": "filesystem"
        },
        "files_trashbin": {
            "enabled": "yes",
            "installed_version": "1.24.0",
            "types": "filesystem,dav"
        },
        "files_versions": {
            "enabled": "yes",
            "installed_version": "1.27.0",
            "types": "filesystem,dav"
        },
        "firstrunwizard": {
            "enabled": "yes",
            "installed_version": "7.0.0-dev.0",
            "types": ""
        },
        "gpxpod": {
            "enabled": "no",
            "installed_version": "8.3.1",
            "types": ""
        },
        "logreader": {
            "enabled": "yes",
            "installed_version": "7.0.0",
            "shownLevels": "[3,4]",
            "types": "logging"
        },
        "lookup_server_connector": {
            "enabled": "yes",
            "installed_version": "1.22.0",
            "types": "authentication"
        },
        "nextcloud_announcements": {
            "enabled": "yes",
            "installed_version": "6.0.0",
            "pub_date": "Thu, 24 Oct 2019 00:00:00 +0200",
            "types": "logging"
        },
        "notifications": {
            "enabled": "yes",
            "installed_version": "7.0.0-dev.1",
            "types": "logging",
            "webpush_vapid_privkey": "***REMOVED SENSITIVE VALUE***",
            "webpush_vapid_pubkey": "BC_fbdFv9-Dq2csI5AbUwsyO0fvi41gM9Xz_w3KtG-i5_iUS_E0dcGuQGMgLy3R-HkSlkcY4oEpeleQ1d3uw3pM"
        },
        "oauth2": {
            "enabled": "yes",
            "installed_version": "1.22.0",
            "types": "authentication"
        },
        "office": {
            "enabled": "yes",
            "installed_version": "1.0.0",
            "types": ""
        },
        "openotp_auth": {
            "enabled": "no",
            "installed_version": "1.30.5",
            "rcdevsopenotp_allow_user_administer_openotp": "off",
            "rcdevsopenotp_api_key": "",
            "rcdevsopenotp_authentication_method": "",
            "rcdevsopenotp_client_id": "",
            "rcdevsopenotp_disable_otp_local_users": "on",
            "rcdevsopenotp_proxy_host": "",
            "rcdevsopenotp_proxy_password": "",
            "rcdevsopenotp_proxy_port": "",
            "rcdevsopenotp_proxy_username": "",
            "rcdevsopenotp_server_url1": "",
            "rcdevsopenotp_server_url2": "",
            "types": ""
        },
        "password_policy": {
            "enabled": "yes",
            "enforceNumericCharacters": "1",
            "enforceUpperLowerCase": "1",
            "installed_version": "6.0.0-dev.0",
            "types": "authentication"
        },
        "photos": {
            "enabled": "yes",
            "installed_version": "7.0.0",
            "lastPlaceMappedUser": "admin",
            "lastPlaceMappingDone": "true",
            "types": "authentication,dav"
        },
        "privacy": {
            "enabled": "yes",
            "installed_version": "6.0.0-dev.1",
            "readableLocation": "ch",
            "types": ""
        },
        "profile": {
            "enabled": "yes",
            "installed_version": "1.3.0",
            "types": ""
        },
        "provisioning_api": {
            "enabled": "yes",
            "installed_version": "1.24.0",
            "types": "prevent_group_restriction"
        },
        "quota_warning": {
            "enabled": "yes",
            "initialised": "yes",
            "installed_version": "1.24.0",
            "types": "filesystem"
        },
        "recommendations": {
            "enabled": "yes",
            "installed_version": "7.0.0",
            "types": ""
        },
        "related_resources": {
            "enabled": "yes",
            "installed_version": "5.0.0-dev.0",
            "types": ""
        },
        "richdocuments": {
            "canonical_webroot": "",
            "disable_certificate_verification": "",
            "doc_format": "ooxml",
            "enabled": "yes",
            "external_apps": "",
            "installed_version": "11.1.0",
            "public_wopi_url": "https:\/\/office.gegesloewl.com",
            "types": "filesystem,prevent_group_restriction",
            "wopi_allowlist": "172.25.0.0\/0,172.26.0.0\/0",
            "wopi_callback_url": "",
            "wopi_url": "https:\/\/office.gegesloewl.com"
        },
        "richdocumentscode": {
            "enabled": "no",
            "installed_version": "24.4.1002",
            "types": ""
        },
        "serverinfo": {
            "cached_count_appdata_files": 1923,
            "cached_count_filecache": 88791,
            "cached_count_storages": 10,
            "enabled": "yes",
            "installed_version": "6.0.0",
            "size_appdata_storage": 10992945,
            "types": ""
        },
        "settings": {
            "enabled": "yes",
            "installed_version": "1.17.0",
            "types": ""
        },
        "sharebymail": {
            "enabled": "yes",
            "installed_version": "1.24.0",
            "types": "filesystem"
        },
        "support": {
            "SwitchUpdaterServerHasRun": "yes",
            "enabled": "yes",
            "installed_version": "6.0.0",
            "types": "session"
        },
        "survey_client": {
            "enabled": "yes",
            "installed_version": "6.0.0-dev.0",
            "last_sent": 1787611816,
            "types": "",
            "last_report": "{\"id\":\"ocnsh2rz4922\",\"items\":[[\"server\",\"version\",\"34.0.3.2\"],[\"server\",\"code\",\"other\"],[\"server\",\"enable_avatars\",\"yes\"],[\"server\",\"enable_previews\",\"yes\"],[\"server\",\"memcache.local\",\"\\\\OC\\\\Memcache\\\\APCu\"],[\"server\",\"memcache.distributed\",\"\\\\OC\\\\Memcache\\\\Redis\"],[\"server\",\"asset-pipeline.enabled\",\"no\"],[\"server\",\"filelocking.enabled\",\"yes\"],[\"server\",\"memcache.locking\",\"\\\\OC\\\\Memcache\\\\Redis\"],[\"server\",\"debug\",\"no\"],[\"server\",\"cron\",\"cron\"],[\"php\",\"version\",\"8.5.9\"],[\"php\",\"memory_limit\",17179869184],[\"php\",\"max_execution_time\",0],[\"php\",\"upload_max_filesize\",21474836480],[\"database\",\"type\",\"mysql\"],[\"database\",\"version\",\"11.8.8\"],[\"database\",\"size\",513916928],[\"apps\",\"activity\",\"7.0.0\"],[\"apps\",\"app_api\",\"34.0.0\"],[\"apps\",\"appstore\",\"1.0.0\"],[\"apps\",\"bruteforcesettings\",\"7.0.0\"],[\"apps\",\"calendar\",\"6.5.3\"],[\"apps\",\"circles\",\"34.0.0\"],[\"apps\",\"cloud_federation_api\",\"1.18.0\"],[\"apps\",\"comments\",\"1.24.0\"],[\"apps\",\"contacts\",\"8.7.6\"],[\"apps\",\"contactsinteraction\",\"1.15.0\"],[\"apps\",\"dashboard\",\"7.14.0\"],[\"apps\",\"dav\",\"1.40.0\"],[\"apps\",\"federatedfilesharing\",\"1.24.0\"],[\"apps\",\"federation\",\"1.24.0\"],[\"apps\",\"files\",\"2.6.0\"],[\"apps\",\"files_downloadlimit\",\"5.2.0\"],[\"apps\",\"files_lock\",\"34.0.1\"],[\"apps\",\"files_mindmap\",\"disabled\"],[\"apps\",\"files_pdfviewer\",\"7.0.0-dev.0\"],[\"apps\",\"files_reminders\",\"1.7.0\"],[\"apps\",\"files_sharing\",\"1.26.0\"],[\"apps\",\"files_trashbin\",\"1.24.0\"],[\"apps\",\"files_versions\",\"1.27.0\"],[\"apps\",\"firstrunwizard\",\"7.0.0-dev.0\"],[\"apps\",\"gpxpod\",\"disabled\"],[\"apps\",\"logreader\",\"7.0.0\"],[\"apps\",\"lookup_server_connector\",\"1.22.0\"],[\"apps\",\"nextcloud_announcements\",\"6.0.0\"],[\"apps\",\"notifications\",\"7.0.0-dev.1\"],[\"apps\",\"oauth2\",\"1.22.0\"],[\"apps\",\"office\",\"1.0.0\"],[\"apps\",\"openotp_auth\",\"disabled\"],[\"apps\",\"password_policy\",\"6.0.0-dev.0\"],[\"apps\",\"photos\",\"7.0.0\"],[\"apps\",\"privacy\",\"6.0.0-dev.1\"],[\"apps\",\"profile\",\"1.3.0\"],[\"apps\",\"provisioning_api\",\"1.24.0\"],[\"apps\",\"quota_warning\",\"1.24.0\"],[\"apps\",\"recommendations\",\"7.0.0\"],[\"apps\",\"related_resources\",\"5.0.0-dev.0\"],[\"apps\",\"richdocuments\",\"11.1.0\"],[\"apps\",\"richdocumentscode\",\"disabled\"],[\"apps\",\"serverinfo\",\"6.0.0\"],[\"apps\",\"settings\",\"1.17.0\"],[\"apps\",\"sharebymail\",\"1.24.0\"],[\"apps\",\"support\",\"6.0.0\"],[\"apps\",\"survey_client\",\"6.0.0-dev.0\"],[\"apps\",\"systemtags\",\"1.24.0\"],[\"apps\",\"text\",\"8.0.0\"],[\"apps\",\"theming\",\"2.9.0\"],[\"apps\",\"twofactor_backupcodes\",\"1.23.0\"],[\"apps\",\"twofactor_totp\",\"16.0.0\"],[\"apps\",\"updatenotification\",\"1.24.0\"],[\"apps\",\"user_status\",\"1.14.0\"],[\"apps\",\"viewer\",\"7.0.0-dev.0\"],[\"apps\",\"weather_status\",\"1.14.0\"],[\"apps\",\"webhook_listeners\",\"1.6.0\"],[\"apps\",\"workflowengine\",\"2.16.0\"],[\"stats\",\"num_files\",88653],[\"stats\",\"num_users\",5],[\"stats\",\"num_storages\",10],[\"stats\",\"num_storages_local\",1],[\"stats\",\"num_storages_home\",2],[\"stats\",\"num_storages_other\",7],[\"stats\",\"num_comments\",0],[\"stats\",\"num_comment_markers\",0],[\"stats\",\"num_systemtags\",0],[\"stats\",\"num_systemtags_mappings\",0],[\"files_sharing\",\"num_shares\",12],[\"files_sharing\",\"num_shares_user\",1],[\"files_sharing\",\"num_shares_groups\",0],[\"files_sharing\",\"num_shares_link\",11],[\"files_sharing\",\"num_shares_link_no_password\",11],[\"files_sharing\",\"num_fed_shares_sent\",0],[\"files_sharing\",\"num_fed_shares_received\",0],[\"files_sharing\",\"permissions_3_17\",11],[\"files_sharing\",\"permissions_0_31\",1],[\"encryption\",\"enabled\",\"no\"],[\"encryption\",\"default_module\",\"no\"]]}"
        },
        "systemtags": {
            "enabled": "yes",
            "installed_version": "1.24.0",
            "types": "logging"
        },
        "text": {
            "enabled": "yes",
            "installed_version": "8.0.0",
            "types": "dav"
        },
        "theming": {
            "cachebuster": "3",
            "enabled": "yes",
            "faviconMime": "image\/png",
            "installed_version": "2.9.0",
            "logoDimensions": "1750x1750",
            "logoMime": "image\/png",
            "types": "logging"
        },
        "twofactor_backupcodes": {
            "enabled": "yes",
            "installed_version": "1.23.0",
            "types": ""
        },
        "twofactor_totp": {
            "enabled": "yes",
            "installed_version": "16.0.0",
            "types": ""
        },
        "updatenotification": {
            "calendar": "6.5.4",
            "contacts": "8.7.7",
            "core": "34.0.3.2",
            "enabled": "yes",
            "installed_version": "1.24.0",
            "openotp_auth": "1.30.5",
            "quota_warning": "1.24.0",
            "richdocuments": "11.1.0",
            "types": "",
            "update_check_errors": 0
        },
        "user_status": {
            "enabled": "yes",
            "installed_version": "1.14.0",
            "types": ""
        },
        "viewer": {
            "enabled": "yes",
            "installed_version": "7.0.0-dev.0",
            "types": ""
        },
        "weather_status": {
            "enabled": "yes",
            "installed_version": "1.14.0",
            "types": ""
        },
        "webhook_listeners": {
            "enabled": "yes",
            "installed_version": "1.6.0",
            "types": "filesystem"
        },
        "workflowengine": {
            "enabled": "yes",
            "installed_version": "2.16.0",
            "types": "filesystem"
        }
    }
}

List of activated Apps

Enabled:
  - activity: 7.0.0
  - appstore: 1.0.0
  - bruteforcesettings: 7.0.0
  - calendar: 6.5.4
  - circles: 34.0.0
  - cloud_federation_api: 1.18.0
  - comments: 1.24.0
  - contacts: 8.7.7
  - contactsinteraction: 1.15.0
  - dashboard: 7.14.0
  - dav: 1.40.0
  - federatedfilesharing: 1.24.0
  - federation: 1.24.0
  - files: 2.6.0
  - files_downloadlimit: 5.2.0
  - files_lock: 34.0.1
  - files_pdfviewer: 7.0.0-dev.0
  - files_reminders: 1.7.0
  - files_sharing: 1.26.0
  - files_trashbin: 1.24.0
  - files_versions: 1.27.0
  - firstrunwizard: 7.0.0-dev.0
  - logreader: 7.0.0
  - lookup_server_connector: 1.22.0
  - nextcloud_announcements: 6.0.0
  - notifications: 7.0.0-dev.1
  - oauth2: 1.22.0
  - office: 1.0.0
  - password_policy: 6.0.0-dev.0
  - photos: 7.0.0
  - privacy: 6.0.0-dev.1
  - profile: 1.3.0
  - provisioning_api: 1.24.0
  - quota_warning: 1.24.0
  - recommendations: 7.0.0
  - related_resources: 5.0.0-dev.0
  - richdocuments: 11.1.0
  - serverinfo: 6.0.0
  - settings: 1.17.0
  - sharebymail: 1.24.0
  - support: 6.0.0
  - survey_client: 6.0.0-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_status: 1.14.0
  - viewer: 7.0.0-dev.0
  - weather_status: 1.14.0
  - webhook_listeners: 1.6.0
  - workflowengine: 2.16.0
Disabled:
  - admin_audit: 1.24.0
  - app_api: 34.0.0 (installed 34.0.0)
  - encryption: 2.22.0
  - files_external: 1.26.0
  - gpxpod: 8.3.1 (installed 8.3.1)
  - suspicious_login: 12.0.0-dev.0
  - twofactor_nextcloud_notification: 8.0.0
  - user_ldap: 1.25.0

Nextcloud Signing status

Nextcloud Logs

RuntimeException
Unable to write preview file

Additional info

No response