Web UI reports “Could not fetch file details” after uploading to WebDAV external storage until the page is refreshed

⚠️ 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 (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• Nextcloud Server is running on 64bit capable CPU, PHP and OS.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

"Could not fetch file details" error after uploading file via web ui to external webdav folder. File wont appear to list but if I refresh page it appear.

Steps to reproduce

1. setup webdav share from rclone
2. mount webdav via nexcloud "extrernal storage"
3. upload file via nexcloud ui

Expected behavior

file should appear to folder without error message without need to refresh page.

Installation method

Community Manual installation with Archive

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.1

Web server

Apache (supported)

Database engine version

MySQL

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

Fresh Nextcloud Server install

Are you using the Nextcloud Server Encryption module?

No response

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": [
            "nc.infra.vectorama.fi",
            "nc.vector.fi"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "default_phone_region": "fi",
        "dbtype": "mysql",
        "version": "25.0.0.18",
        "overwrite.cli.url": "https:\/\/nc.infra.vectorama.fi",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "mail_sendmailmode": "smtp",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "587",
        "maintenance": false,
        "theme": "",
        "loglevel": 2,
        "mail_smtpsecure": "tls",
        "allow_local_remote_servers": true,
        "updater.secret": "***REMOVED SENSITIVE VALUE***"
    }
}

List of activated Apps

Enabled:
  - activity: 2.17.0
  - bruteforcesettings: 2.5.0
  - circles: 25.0.0
  - cloud_federation_api: 1.8.0
  - comments: 1.15.0
  - contactsinteraction: 1.6.0
  - dashboard: 7.5.0
  - dav: 1.24.0
  - federatedfilesharing: 1.15.0
  - federation: 1.15.0
  - files: 1.20.1
  - files_external: 1.17.0
  - files_pdfviewer: 2.6.0
  - files_rightclick: 1.4.0
  - files_sharing: 1.17.0
  - files_trashbin: 1.15.0
  - files_versions: 1.18.0
  - firstrunwizard: 2.14.0
  - groupfolders: 13.0.0
  - logreader: 2.10.0
  - lookup_server_connector: 1.13.0
  - nextcloud_announcements: 1.14.0
  - notifications: 2.13.1
  - oauth2: 1.13.0
  - password_policy: 1.15.0
  - photos: 2.0.0
  - privacy: 1.9.0
  - provisioning_api: 1.15.0
  - recommendations: 1.4.0
  - related_resources: 1.0.0
  - serverinfo: 1.15.0
  - settings: 1.7.0
  - sharebymail: 1.15.0
  - support: 1.8.0
  - survey_client: 1.13.0
  - systemtags: 1.15.0
  - text: 3.6.0
  - theming: 2.0.0
  - twofactor_backupcodes: 1.14.0
  - updatenotification: 1.15.0
  - user_saml: 5.0.3
  - user_status: 1.5.0
  - viewer: 1.9.0
  - weather_status: 1.5.0
  - workflowengine: 2.7.0
Disabled:
  - admin_audit
  - encryption
  - suspicious_login
  - twofactor_totp
  - user_ldap

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

{"reqId":"fiY1YNFEbYrGlrpoalfy","level":3,"time":"2022-10-20T15:53:58+00:00","remoteAddr":"2a00:4cc1:2:0:d92c:516a:4112:18ce","user":"tapsa","app":"webdav","method":"PROPFIND","url":"/remote.php/dav/files/tapsa/work/20220718.244000.Johteenhovipiha.mp4","message":"Storage with mount id 3 is not available","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36","version":"25.0.0.18","exception":{"Exception":"Sabre\\DAV\\Exception\\ServiceUnavailable","Message":"Storage with mount id 3 is not available","Code":0,"Trace":[{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Tree.php","line":78,"function":"getChild","class":"OCA\\DAV\\Connector\\Sabre\\Directory","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Tree.php","line":73,"function":"getNodeForPath","class":"Sabre\\DAV\\Tree","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":971,"function":"getNodeForPath","class":"Sabre\\DAV\\Tree","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":1662,"function":"getPropertiesIteratorForPath","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":1647,"function":"writeMultiStatus","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php","line":346,"function":"generateMultiStatus","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"httpPropFind","class":"Sabre\\DAV\\CorePlugin","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":472,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":253,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":321,"function":"start","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/lib/Server.php","line":360,"function":"exec","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/apps/dav/appinfo/v2/remote.php","line":35,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/var/www/nextcloud/remote.php","line":167,"args":["/var/www/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/var/www/nextcloud/apps/dav/lib/Connector/Sabre/Directory.php","Line":220,"message":"Storage with mount id 3 is not available","exception":{},"CustomMessage":"Storage with mount id 3 is not available"}}

Additional info

Could not fetch file details "20220718.244000.Johteenhovipiha.mp4"

Looks that log say that mount is not available. Anyhow it is. And with page refresh upoaded file appears. And I can remove it wihtout any problem.

Start by reproducing the upload through the Web UI and inspect the subsequent PROPFIND request. Read apps/dav/lib/Connector/Sabre/Directory.php around line 220 and the request path through apps/dav/lib/Server.php, using the reported “Storage with mount id 3 is not available” log. Done means the uploaded file appears immediately without the error or a page refresh.