[Bug]: Folders sometimes empty after upgrade to NC29

[paramazo]

⚠️ 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

Users reported that their folder view is sometimes empty, "No files found" gets displayed instead. After a few minutes or some retries it gets displayed. This happens after upgrade to NC v29.0.2.

Steps to reproduce

Click on files tab

Expected behavior

Files should be displayed

Installation method

Community Manual installation with Archive

Nextcloud Server version

29

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.2

Web server

Apache (supported)

Database engine version

None

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": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "***REMOVED SENSITIVE VALUE***",
            "***REMOVED SENSITIVE VALUE***",
            "***REMOVED SENSITIVE VALUE***"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "29.0.2.2",
        "overwrite.cli.url": "https:\/\/***REMOVED SENSITIVE VALUE***",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "force_locale": "de_DE",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "proxy": "***REMOVED SENSITIVE VALUE***:8080",
        "proxyexclude": [
            "***REMOVED SENSITIVE VALUE***",
            "***REMOVED SENSITIVE VALUE***",
            "***REMOVED SENSITIVE VALUE***",
            "***REMOVED SENSITIVE VALUE***"
        ],
        "ldapIgnoreNamingRules": false,
        "ldapProviderFactory": "OCA\\User_LDAP\\LDAPProviderFactory",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "0": "log_level => 0",
        "onlyoffice": {
            "jwt_secret": "***REMOVED SENSITIVE VALUE***",
            "jwt_header": "AuthorizationJwt"
        },
        "maintenance": false,
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "pipe",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "25",
        "has_rebuilt_cache": true,
        "versions_retention_obligation": "auto,3",
        "updater.release.channel": "stable",
        "loglevel": 2,
        "default_phone_region": "de",
        "mail_smtpsecure": "tls",
        "filelocking.enabled": true,
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": { 
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 6379,
            "timeout": 0,
            "password": "***REMOVED SENSITIVE VALUE***"
        },
        "lost_password_link": "disabled",
        "maintenance_window_start": 1,
        "app_install_overwrite": [
            "files_mindmap"
        ]
    }
}

List of activated Apps

Enabled:
  - activity: 2.21.1
  - bruteforcesettings: 2.9.0
  - calendar: 4.7.6
  - circles: 29.0.0-dev
  - cloud_federation_api: 1.12.0
  - comments: 1.19.0
  - contacts: 6.0.0
  - contactsinteraction: 1.10.0
  - dashboard: 7.9.0
  - dav: 1.30.1
  - deck: 1.13.0
  - drawio: 3.0.2
  - federatedfilesharing: 1.19.0
  - federation: 1.19.0
  - files: 2.1.0
  - files_downloadlimit: 2.0.0
  - files_external: 1.21.0
  - files_lock: 29.0.1
  - files_pdfviewer: 2.10.0
  - files_reminders: 1.2.0
  - files_sharing: 1.21.0
  - files_trashbin: 1.19.0
  - files_versions: 1.22.0
  - flow_notifications: 1.9.0
  - forms: 4.2.4
  - groupfolders: 17.0.1
  - logreader: 2.14.0
  - lookup_server_connector: 1.17.0
  - mail: 3.7.1
  - nextcloud_announcements: 1.18.0
  - notes: 4.10.0
  - notifications: 2.17.0
  - oauth2: 1.17.0
  - onlyoffice: 9.2.2
  - password_policy: 1.19.0
  - photos: 2.5.0
  - privacy: 1.13.0
  - provisioning_api: 1.19.0
  - recommendations: 2.1.0
  - related_resources: 1.4.0
  - serverinfo: 1.19.0
  - settings: 1.12.0
  - spreed: 19.0.1
  - systemtags: 1.19.0
  - tables: 0.7.3
  - text: 3.10.0
  - theming: 2.4.0
  - twofactor_backupcodes: 1.18.0
  - twofactor_totp: 11.0.0-dev
  - updatenotification: 1.19.1
  - user_ldap: 1.20.0
  - user_status: 1.9.0
  - viewer: 2.3.0
  - weather_status: 1.9.0
  - workflowengine: 2.11.0

Nextcloud Signing status

No response

Nextcloud Logs

nextcloud.log is not logging anything, the web protocol reader hangs

Additional info

Not much load on the server

[joshtrichards]

After a few minutes or some retries it gets displayed.

Are you using External Storage? Are some your users' External Storage mounts inaccessible or slow?

nextcloud.log is not logging anything, the web protocol reader hangs

You can access the log file directory. It's located within your data/ directory.

Also, can you include the requested config report (output of occ config:list system or equivalent) and app list (occ app:list)?

[paramazo]

@joshtrichards

External Storage is not used.

The Logfile is located as you described, but without any new entries. Needs to set a loglevel in config?

Output of occ config:list system and occ app:list attached.

With the update to NC29 there was a new config maintenance_window_start which was set to 1. Now i set it to 100, the issue with missing files was not seen again yet.